Planting techniques and key points of cultivation and Management of Osmanthus fragrans

Sweet-scented osmanthus is an evergreen shrub or small tree of Oleaceae, also known as Cinnamomum osmanthus, Jiuli incense, Golden millet and so on. Osmanthus fragrans is an excellent ornamental and practical tree species that integrates greening, beautification and fragrance. In ancient Chinese poems, the number of works of chanting osmanthus is also considerable, and it has been deeply loved by the Chinese people since ancient times. Let's take a look at the planting techniques of sweet-scented osmanthus trees.

Variety Classification of Osmanthus fragrans

1. Four seasons cassia varieties: four seasons cassia tufted shrubby, tree-shaped low, short and dense branches, round crown. The new leaves are deep red and the old mature leaves are green or yellowish green. The leaf is oval in shape, and the intersection angle between the main vein and the lateral vein of the leaf is very large, close to the vertical state. Flower buds are often solitary or 2-3 superimposed, blooming in batches from September to March every year, and the flower fragrance is not as strong as silver cinnamon, cinnamon and cinnamon. Common varieties are big leaf four seasons cinnamon, leaflet four seasons cinnamon, four seasons flowering laurel, Japanese incense, big leaf Buddha top bead, tooth leaf four seasons cinnamon and other varieties.

2. Cinnamon population: Cinnamomum dioecious, the crown is round, the bark is light gray, smooth and the lenticels are sparse. Leaves leathery, long elliptic or elliptic, flat, margin retrorse, entire, apex occasionally sparsely toothed, base broadly cuneate, apex obtuse or mucronate, lateral veins 8-10 pairs, reticulate veins obvious on both sides, petiole 8-10 mm long. The flower color is orange-red, the Corolla is slightly buckled, the fragrance is light, and the flowering period is from late September to early October. There are big flower cinnamon, tooth cinnamon, cinnamon cinnamon, broad leaf red and other varieties.

3. Jin Guipin population: the crown of Jin Gui is spherical, the tree is strong, and the branches are tall and straight, very close. The bark is gray, the lenticels are round or oval, and the spring shoots are stout. The leaf color is dark green, the leaf blade is oval, the leaf surface is uneven, the leaf edge is microwave curved. Flowers yellow, fragrant, not sturdy, autumn flowering, lemon yellow to golden yellow flowers. The varieties are Dahua Jingui, Daye Huang, Huangchuan Jingui, late Jingui, Yuanye Jingui, Xianning Evening Gui, Ball Gui, Yuanjian Jingui, Liu Ye Su Gui, Jin Shigui, Boye Jingui and so on.

4. Silver cinnamon population: the crown of silver cinnamon is round, the big branches are developed, the branches and leaves are dense and grow well. Bark light gray, lenticels are many and large, shaped like snowflakes, very obvious. The leaf is green or dark green, long oval or oval, the leaf is broad and thick, and the leaf surface is more spreading. Flowering in the first and middle of September, the color of milky yellow to lemon yellow, rich aroma, not strong after flowering, autumn flowering. Varieties are broad-leaf seed silver cinnamon, willow leaf silver cinnamon, hard leaf silver cinnamon, seed silver cinnamon, Jiulong cinnamon, early silver cinnamon, evening silver cinnamon, Baijie, pure white silver cinnamon, Qingshan silver cinnamon, etc.

Planting Environment of Osmanthus fragrans

1. Temperature: sweet-scented osmanthus trees like warmth. The average temperature in the planting area is 14: 28 ℃, the average temperature in July is 24: 28 ℃, and the average temperature in January is more than 0 ℃. It can withstand the lowest temperature of-13 ℃, and the optimum growth temperature is 15: 28 ℃. It can overwinter in the open field in the south of Qinling Mountains and Huaihe River in China. Not very hardy, but compared with other evergreen broad-leaved trees, it is still a relatively hardy tree species.

2. Moisture: sweet-scented osmanthus trees like to be moist, and humidity is extremely important to the growth and development of sweet-scented osmanthus, requiring an average annual humidity of 75-85% and an annual precipitation of about 1000 mm, especially when young and adult trees bloom, which will affect flowering in case of drought. Avoid stagnant water, but also have a certain ability to withstand drought.

3. Light: sweet-scented osmanthus likes sunlight and can bear shade. Under full light, its branches and leaves grow luxuriantly, bloom densely, and grow sparsely in the shade. If potted in the north, it is necessary to pay attention to sufficient light to facilitate growth and flower bud formation. Strong sunlight and shade are disadvantageous to its growth, and it is generally required to light 6-8 hours a day.

4. Soil: sweet-scented osmanthus is not strict on soil, except alkaline soil and low-lying land or soil with too heavy clay and poor drainage, it can generally grow, but the slightly acidic sandy loam with deep soil layer, loose and fertile soil and good drainage is the most suitable.

5. Air: sweet-scented osmanthus has a certain resistance to harmful gases such as chlorine, sulfur dioxide and hydrogen fluoride, and has a strong ability to absorb dust. It is suitable to be planted in a ventilated and transparent place, likes a clean and ventilated environment, and is not resistant to smoke and dust. often can't blossom after being injured.

Propagation techniques of Osmanthus fragrans

1. Sowing: the fruit of sweet-scented osmanthus usually matures from April to May and can be harvested when the pericarp changes from green to purple-black. Sweet-scented osmanthus seeds have the role of post-ripening, it should be stored in sand for at least half a year, sprinkle water and pile up after harvest, remove the pulp, place in a cool place to dry the seeds naturally, store them with mixed sand, and sow in autumn or spring after sand storage. Before sowing, the ground should be well prepared, and enough basic fertilizer should be applied. It can also be sowed in the indoor seedbed. When sowing, put the seed navel on the side to avoid the bending of radicle and young stem, which will affect the growth of seedlings in the future.

2. Grafting: sweet-scented osmanthus grafted rootstocks are mostly used in privet, lobular privet, wax, water wax, etc., and lobular privet is used in mass propagation of seedlings. Before spring germination, cut the rootstock from 5 cm above the ground, cut the thick 1-2-year-old branches of sweet-scented osmanthus 10-12 cm in length, cut 2-3 cm in length on one side of the base, cut a 45-degree slope on the opposite side, cut longitudinally at about 1x3 on one side of the rootstock, about 2 cm deep, insert the scion into the incision, align the cambium, tie it up with a plastic bag, and then bury it in the soil.

3. Cutting: Osmanthus fragrans cuttings are usually cut into 5-10 cm long with annual branches before sprouting in spring, the lower leaves are cut off, and 2-3 green leaves are left in the upper part, which are inserted in the river sand or loess seedbed, with a row spacing of 3-20 cm, timely irrigation or spraying after planting, and shading, keeping the temperature 20: 25 ℃, and relative humidity 85: 90% can take root and transplant 2 months.

4. Striping: sweet-scented osmanthus can be divided into two types: low pressure and high pressure. the low pressure method is to select the flexible parts of the 1 ~ 2-year-old branches of the lower part of the low dry mother tree from spring to early summer, cut or ring-peeled and pressed into the grooves 3cm deep and fixed with wood strips. The high-pressure method is to cut or peel 1-2-year-old stout branches from the mother tree in spring with the same low-pressure method, then smear the wound with culture medium, fasten it up and down with plastic bags, and cut off the mother plant for maintenance in autumn.

Planting techniques of Osmanthus fragrans

1. Digging holes: before the sweet-scented osmanthus trees rise seedlings, dig the planting holes. The diameter of the holes is 0.5-0.6 meters larger than the soil ball carried by the root of the seedling, so that the soil around the soil ball can be compacted during planting, so that the soil ball is closely combined with the hole soil. The depth of the hole is 0.2 to 0.3 meters larger than that of the soil ball carried by the seedlings. When digging holes, pile the topsoil and core soil separately so that when filling the soil, fill the topsoil first and then fill the core soil. After digging a good hole, it is best to give basic fertilizer. On top of the base fertilizer, fill in about 10 cm thick soil, so that the base fertilizer does not come into direct contact with the soil ball to prevent root burning.

2. Planting: when planting sweet-scented osmanthus trees, place the seedlings in a pre-dug planting hole, cut off the grass rope with the crown, adjust the viewing surface, make the tree stand upright, and fill a small amount of topsoil to fix the soil ball. Then cut the binding material and fill the topsoil. When halfway through the filling, tamp the earth ball around with a thick wooden stick. If you continue to fill the heart soil, it is appropriate to cover the soil 0.1 to 0.2 meters higher than the original soil ball. If the plant is tall, it needs to be supported and fixed with wooden stakes when planting. After the seedlings are planted, ridges are built around the soil. and pour water in time, so as to no longer infiltrate to the degree.

Planting Management of Osmanthus fragrans

1. Fertilizer and water: after transplanting, if the sweet-scented osmanthus trees have accumulated water in the nursery due to heavy rain, they should dig ditches to drain water and water them in case of drought. In addition to adequate basic fertilizer, fertilizer should be applied three times a year, that is, 0.1-0.3 kg of available nitrogen fertilizer per plant in late March to promote its height and shoot growth, and 0.1-0.3 kg of available phosphorus and potassium fertilizer per plant in July to improve its drought resistance. 2 kg of organic fertilizer (such as farm manure) was applied per plant in October to improve its cold resistance and prepare for overwintering.

2. Pruning: sweet-scented osmanthus has the characteristics of strong germination and natural formation of shrubs. It is difficult to cultivate tall plants if the shoots are not pruned and wiped in time in spring and autumn, and it is easy to form the upper strong and lower weak phenomenon of dense upper branches and rare lower branches. During pruning, except for those with poor growth due to tree potential and branch potential, it is generally dominated by branch thinning, and only the overdense peripheral branches are properly thinned, and the overgrown branches and disease and insect branches are cut off to improve the ventilation and light transmission conditions of the plant. The sprouting tillering branches from the base of the trunk should be erased in time so as not to consume the nutrients in the tree and disturb the shape of the tree.

3. Loosen the soil: sweet-scented osmanthus trees are ploughed once in spring and autumn combined with fertilization to improve soil structure. The ability of cold resistance can be enhanced by building a base once before overwintering and painting the trunk white once. Weeding 2-3 times a year to prevent weeds from competing with seedlings for water, fertilizer and light.

4. Diseases: the common diseases of sweet-scented osmanthus include leaf spot, coal pollution, algal spot, root rot, iron deficiency and so on. Leaf spot, coal fouling and algal spot can be controlled by spraying 0.5 Bordeaux solution or 5% carbendazim 500-1000 times. Root rot disease should pay attention to keep the soil loose and breathable, do not accumulate water, for example, when root rot is caused by fungi, the root can be irrigated with 200-300 times solution of benzoammonium.

5. Insect pests: the common pests of sweet-scented osmanthus are leaf wasps, whitefly, mites, white scale, yellow moth and so on. Leaf wasps, whitefly and mites can be sprayed with 100% dimethoate 1500-3000 times. In addition to manual brushing, Changbai scale can be sprayed with 400% omethoate 1000 times or 40% fenitrothion 500 times in the first and second generation nymphs.

Transplanting techniques of Osmanthus fragrans

1. Time: it is very necessary to choose the season when transplanting sweet-scented osmanthus trees, and the semi-dormant period of healthy trees can be selected generally (under normal circumstances). For example, Jiangnan can be carried out after the Mid-Autumn Festival to the end of the winter of the following year (from mid-September to around February 15 of the following year, except when the ice and snow is cold), because it is at this time its semi-dormant stage, and the new buds have not yet emerged, which is conducive to the coordination of various factors in the tree. At the same time, it can also be carried out in the plum rain season in the south of the Yangtze River, because the first growth peak of the tree in this period ends and has enriched the nutrition of the body, so the survival rate appears to be relatively high.

2. Tree selection: sweet-scented osmanthus trees for transplanting should choose sweet-scented osmanthus trees with full shape, luxuriant branches and leaves, no diseases and insect pests, easy to dig and lift.

3. Digging: the newly planted tree hole should be dug about a week before transplanting. The diameter of the pre-dug tree pit should be about 1 meter larger than the packing diameter of the transplanted tree, and the height should be at the level of the transplanting packaging height. The excavated topsoil and the subsoil are placed separately, spread out to dry, and clean up the bricks, tiles and other impurities in the soil. According to the mixture ratio of 10 ∶ 1 (10 parts of soil), ferrous sulfate was mixed to increase the acidity of the soil, disinfect the soil and enhance the fertility at the same time.

4. Pruning: the pruning of sweet-scented osmanthus is one of the keys to transplanting. Because the sprouting ability of sweet-scented osmanthus is not strong, it is not advisable to cut off the stem and branch. The leaves of sweet-scented osmanthus can only be trimmed, cut off with scissors, leaving petioles, protecting axillary buds, and retaining 1/3 of the original leaves, which can not only reduce water evaporation, but also retain the beauty of the original crown.

5. Seedling emergence: the transplanting of sweet-scented osmanthus is best in hard packaging, and the sweet-scented osmanthus trees to be transplanted should be watered once a week in advance, so that their roots can absorb enough water, so it is easy to dig into balls, and the soil balls will not be scattered because the soil is too dry. The diameter of the soil ball should be 6 to 8 times the crown diameter of the plant 1 meter above ground, and the height is 70% of the diameter of the soil ball. It is better to dig big under the condition.

6. Planting: before planting, the original soil brought back by transporting sweet-scented osmanthus trees to the pre-dug tree hole should be backfilled with 10 to 15 cm. Because the sweet-scented osmanthus tree is not resistant to flooding, the depth of the planted sweet-scented osmanthus is 10 to 15 centimeters higher than the original ground. First of all, put the sweet-scented osmanthus tree in the direction of its original growth, and then put a plastic pipe in each of the four corners of the tree pit to increase the air permeability of the root after filling the soil. Then remove the formwork sequentially while backfilling to 1x3 of the height of the earth ball, fill the original soil close to the surroundings of the soil ball, and fill a solid layer to prevent the soil ball from breaking. All the tree pits are filled firmly, cofferdam, braced and watered for the first time.

7. Management: first, water permeable again 3 to 4 days from the first watering. Second, after all the water is dry, the remaining soil around the original tree pit is surrounded by the roots to form a mound with high middle height and low surroundings, so that the sweet-scented osmanthus tree will not be drowned because of stagnant water. Third, the spring water must be watered once next spring. Fourth, the leaves and branches were sprayed with the mixture of potassium dihydrogen phosphate and fungicides (carbendazim, etc.) at an average temperature of about 20 ℃. It not only carried out foliar topdressing for sweet-scented osmanthus trees, but also played a role in sterilization.

Planting methods and cultivation Management techniques of Osmanthus fragrans

Sweet-scented osmanthus is an evergreen tree of Oleaceae, also known as Oleaceae, cinnamon, golden millet, Jiuli incense, etc., which has been cultivated in China for more than 2500 years. Osmanthus fragrans is one of the top ten traditional flowers in China, and it is also one of the most precious flowers and trees in modern urban greening. It originated in southwest and south-central China, and is now widely cultivated in various provinces and regions of the Yangtze River Basin, North China and Northeast China. It has beautiful trees, luxuriant branches, green leaves, evergreen four seasons, especially seductive with the fragrance of flowers. It is really "monopolized by three autumn, pressing Zhongfang". It is designated as a city flower by world-famous tourist cities such as Suzhou, Hangzhou and Guilin.

Summary of Osmanthus fragrans cultivation

1. Varieties of sweet-scented osmanthus: there are many varieties of sweet-scented osmanthus, such as Jin Gui, Yin Gui, Dan Gui and Siji Gui, etc. Jin Gui tree is tall, round crown, large thick green glossy, oval leaves, leaf margin wavy, leaves thick, golden yellow flowers, the strongest aroma; silver cinnamon leaves smaller, oval, egg-shaped Obovate, thin, yellowish white or light yellow flowers, slightly lighter fragrance than cinnamon, flowering period is also a week later than cinnamon; cinnamon leaves are smaller, lanceolate or oval, apex pointed, leaf surface rough, flowers are orange or orange-red, light aroma Four seasons cassia leaf plum oval, thin, yellow or light yellow flowers, long florescence, in addition to severe cold and heat, several times flowering, but mostly in autumn, light fragrance, small leaves, mostly shrubby.

2. The habit of sweet-scented osmanthus: sweet-scented osmanthus likes warm and humid climate and has a certain ability to resist cold, but it is not resistant to cold. Like light, but also resistant to shade, in the seedlings should have a certain degree of shade. The demand for soil is not high, like the slightly acidic soil with high dryness and rich humus, especially the sandy soil with deep, fertile and moist soil and good drainage. Do not tolerate drought and barren soil, avoid saline-alkali soil and waterlogged land, planted in poorly drained wetlands, will cause poor growth, root rot, leaf shedding, and eventually lead to the death of the whole plant.

3. The cultivation value of sweet-scented osmanthus: sweet-scented osmanthus is widely used. Often planted in gardens, on both sides of roads, lawns and courtyards and other places, is the best greening tree species for government organs, schools, the army, enterprises and institutions, streets and families. Because it has a certain resistance to harmful gases such as dioxide and hydrogen fluoride, it is also an excellent flower and tree for greening in industrial and mining areas. It matches with mountains, stones, pavilions, platforms, buildings and pavilions, making it more dignified and elegant, pleasing to the eye and pleasing to the eye. At the same time, it is also a good material for potted plants. after making bonsai, it can observe the shape, stone flowers and smell fragrance. It is really "killing three birds with one stone". In addition, sweet-scented osmanthus is a good material for carving because of its hard material, luster and beautiful texture. Sweet-scented osmanthus is an important raw material for making sweet-scented osmanthus sugar, sweet-scented osmanthus tea, sweet-scented osmanthus wine and sweet-scented osmanthus cake. the essence extracted from sweet-scented osmanthus is widely used in food industry and chemical industry. Cinnamon can extract dyes and tanning materials, and cinnamon leaves can be used as seasoning. Enhance the fragrance of food.

Propagation methods of Osmanthus fragrans

1. Cutting and grafting: the propagation methods of sweet-scented osmanthus include sowing, cutting, grafting, striping and so on. Cutting and grafting are the most common in production. Cutting propagation has the advantages of simple technology, large number of propagation, high speed, high survival rate and low cost. It is the most widely used and widely used propagation method for seedling producers and flower lovers.

① cutting time: 1-year-old spring shoot can be selected for cutting from early March to mid-April, which is the best cutting time. The semi-mature branches of the same year can also be selected for heel cutting from late June to late August, but it has high requirements for temperature and humidity control.

Cutting and treatment of ② cuttings: strong, full, disease-free and pest-free branches were selected from the middle and upper part of the tree and the periphery of the young trees. Cut the branches into 10ml and 12cm long, remove the lower leaves, leaving only the upper 3mur4 leaves. Conditionally, soaking the cuttings in 50/1000000 to 100 GGR6 solution for 1 hour will be of great benefit to the rooting of cuttings.

③ soil preparation: use slightly acidic, loose, aerated and good water retention soil as cutting substrate. Carbendazim, pentachloronitrobenzene and other drugs were used to disinfect and sterilize the soil before cutting.

④ post-cutting management: mainly to control the temperature and humidity, which is the key to whether the cuttings can take root and survive. The best ground temperature for rooting is 25Mel 28 ℃, and the best relative humidity should be kept above 85%. It can be controlled by sunshade, arch plastic shed, sprinkler, ventilation and so on. Secondly, we should pay attention to anti-mildew, because of high temperature and humidity easy to produce mold, carbendazim and methyl thiophanate can be used alternately every week. Grafting propagation has the advantages of rapid seedling formation, prosperous growth, early flowering and small variation, and it is also one of the more commonly used methods.

⑤ cultivation rootstocks: use privet, lobular privet, lobular ash and other 1-2-year-old seedlings as rootstocks. Among them, the survival rate of sweet-scented osmanthus grafted with privet is high, and the initial growth is fast, but the wound is not healed well, and it is easy to break off in case of strong wind or external force collision.

2. Grafting propagation: grafting was carried out before and after Ching Ming Festival. There are two most commonly used methods in production, one is the crackling method, the other is the abdominal connection method. It is appropriate to select 1-2-year-old sturdy, disease-free branches on adult trees, remove leaves and retain petioles. If the crackling method is used, the rootstock should be cut from 4Mel 6cm on the ground before the seedling sprouts in spring before grafting. The thickness of the scion should match that of the rootstock, the cutting surface of the scion should be smooth, and the key to successful crackling lies in the alignment of the cambium between the rootstock and the scion and tight binding. If the abdominal grafting method is adopted, the grafted buds are directly embedded in the rootstock water without breaking the rootstock, and the rootstock will be cut off after successful grafting. No matter which method is adopted for grafting, it should be grafted as soon as possible. If you take ears from other places, be sure to keep them fresh. It is better to choose sunny and windless weather for grafting. After grafting, attention should be paid to checking the survival rate, doing a good job in mending, wiping buds, cutting rootstocks, unbinding, water and fertilizer management and prevention and control of diseases and insect pests.

3. Sowing and propagation: sweet-scented osmanthus can also be sowed and propagated. However, because some varieties are not fruiting or less fruiting, and the seedlings bred by sowing method have a longer life from flowering to flowering, it takes more than 10 years to blossom, so seedling producers and family flower lovers seldom use this method. The seeds of sweet-scented osmanthus mature about May. After seed collection, the seeds can be sowed in two periods: first, it can be inserted immediately after harvest, which can reduce the process of seed storage, and some seeds will germinate and emerge in autumn. Its disadvantage is that the overwintering management of seedlings is difficult and it is easy to suffer frost injury. The second is to collect the seeds and store them in the sand first, and then sow the seeds from the sand in the spring of the following year. It germinated and sprouted in April. The advantages of this method are: fast seedling growth and less difficulty in seedling management. When sowing and raising seedlings, attention should be paid to preventing and smelting the moisture of seedlings, strengthening the management of water and fertilizer, replenishing seedlings and weeding, shading and cooling, preventing cold and freezing, and so on.

4. Striping propagation: the time of crimping should be carried out before the bud sprouting in spring. Because the branch of sweet-scented osmanthus is not easy to bend, it generally does not use the ground pressure method, but only the high-pressure method. When using the high pressure method, select the 2-3-year-old branches with strong growth potential on the excellent mother plant, peel a circle of cortex 0.3cm wide on the branches, then peel them with 100/1000000 GGR6 solution or the same dose of naphthylacetic acid, and then use plastic film to load with mud, rotten leaf soil, moss, etc., wrap up the scratched parts, pour through water, and then wrap the mouth of the bag. Always pay attention to observation, and timely replenish water, so that the bandage is always in a moist state. After cultivation in summer and autumn, new roots will grow. In the spring of the following year, the branches that grow roots are cut off from the mother body, the bandages are removed, the soil is moved into the basin, poured through water, and maintained in a cool place. After a large number of new shoots germinate, they will receive full light.

Cultivation and management

The 1-year-old sweet-scented osmanthus seedlings cultivated by planting and cutting should not be used as green seedlings immediately because of their poor ability to resist drought, cold and barren. They should be transplanted to the nursery for 2-5 years, and then transplant after they grow into middle seedlings. The main points of cultivation management are briefly introduced as follows:

1. Soil preparation: select slightly acidic sandy loam with sufficient light, deep soil layer, rich humus, strong permeability and convenient drainage and irrigation (PH = 50Mel 6.5) as cultivation nursery. In the autumn and winter of the previous year, the nursery was reclaimed once, and the hole was dug according to the specification that the row spacing was 1 m x 1.5 m (2 years later, when it was long, thick and tall, one plant was removed every other plant, so that the plant spacing became 2 m x 1.5 m) and the planting hole was 0.4 m x 0.4 m x 0.4 m. Each hole was applied with mature flat farm manure (pig manure, cow manure) 2Mel 3kg, phosphate fertilizer 0.5kg as base fertilizer. Mix the base fertilizer with the surface loam and fill it into the hole. After being eroded and fermented by winter snow and spring rain, fertilizer is easy to be absorbed by seedlings.

2. Transplanting: transplanting is best when the sap has not yet flowed or just flowed, usually from early February to early March. When taking seedlings, leave more roots and hurt less roots as much as possible. After taking seedlings, they should be planted as soon as possible, and those who need to adjust seedlings from other places should pay attention to moisturizing to prevent seedlings from dehydration. After planting, the soil should be compacted and watered once, so that the root system of the seedling is closely connected with the soil.

3. Water and fertilizer management: after transplanting, if heavy rain causes stagnant water in the nursery, trenches should be dug to drain water. In case of drought, water should be watered to fight the drought. In addition to adequate basic fertilizer, fertilizer should be applied three times a year, that is, 0.1 kg of available nitrogen fertilizer per plant in late March to promote its height and multiple shoots, 0.1 kg of available P and K fertilizer per plant in July to improve its drought resistance, and 2 kg of organic fertilizer (such as farm manure) in October to improve its cold resistance and prepare for overwintering.

4. Pruning and shaping: sweet-scented osmanthus has strong germination ability and has the characteristic of forming shrubs naturally. It shoots twice a year in spring and autumn. if it is not pruned and wiped in time, it is difficult to cultivate tall plants, and it is easy to form the phenomenon of upper strong and lower weak with dense upper branches and rare lower branches. During pruning, except for those with poor growth due to tree potential and branch potential, it is generally dominated by branch thinning, and only the overdense peripheral branches are properly thinned, and the overgrown branches and disease and insect branches are cut off to improve the ventilation and light transmission conditions of the plant. The sprouting tillering branches from the base of the trunk should be erased in time so as not to consume the nutrients in the tree and disturb the shape of the tree.

5. Loosening soil and weeding: ploughing once in combination with fertilization in spring and autumn to improve soil structure. The ability of cold resistance can be enhanced by building a base once before overwintering and painting the trunk white once. Weeding 2mi 3 times a year to prevent weeds from competing with seedlings for water, fertilizer and light.

6. control of diseases and insect pests: sweet-scented osmanthus has few diseases and insect pests, such as anthracnose, leaf spot, red spider and oyster shield scale, which can be controlled by Bordeaux, stone-sulfur mixture, bacillus, methyl topiramate, dichlorvos, triclofenac and so on.

Key points of transplanting Osmanthus fragrans trees

1. Transplanting time: from mid-January to early February. At this time, the trees are in a dormant state, and soon after transplantation, the vitality becomes stronger and it is easy to survive. Avoid transplanting in summer.

2. Pruning: it can reduce the nutrient consumption and water transpiration in the tree. The amount of pruning is determined by the age and growth potential of the tree. A hundred-year-old tree should leave few or no branches because of its weak growth. Those with strong growth and those who are young can leave more branches. When cutting, it is necessary to remove disease and insect branches, growing branches and cross branches. After that, smear the wound with Vaseline or Bordeaux solution to avoid disease and insect damage and Rain Water erosion.

3. Root cutting: in order to improve the transplanting survival rate of sweet-scented osmanthus trees, the roots of 1 ~ 2 years before transplanting were cut off respectively, and the distance from the stump to the stump was 3 times the diameter of the stump. Then 50/1000000 to 100 GGR6 solution or 0.1% indole acetic acid solution was smeared on the cut root, and the soil was watered to let it grow new roots.

4. Pile: the size of the soil ball is determined by excavation, which is generally 6 times the diameter of the stump. If the ground diameter is too thick, it should not be less than 3. While digging, tie the earth ball with a wet straw curtain and straw rope to prevent it from getting loose. The big root of the tree is sawed off with a saw, and the steel mouth is coated with rooting powder such as GGR6. After digging, wrap it with a wet straw curtain and straw rope, and tie the grass rope to the tree trunk 2.5 meters high.

5. Transport: it should be loaded and unloaded lightly during transportation. When loading, the trees should be fixed and separated by buffers to prevent the trees from colliding, so as not to hurt the skin and hit the soil balls. Pay attention to moisturizing on the way.

6. Planting: in the first month of planting, dig the planting hole first, the size of the hole is 1.5 times that of the soil ball, then fill the hole with mycorrhizal soil, and block the mature farm manure 5 kg 10 kg, available phosphate fertilizer 2 kg, irrigation spare. When planting, use a crane to gently put the tree into the planting hole, cut the packaging grass curtain and rope with scissors, and then backfill the stable soil, step on it and water it thoroughly.

7. Management and protection

① fixed frame: set up a tripod around the trunk of the tree to prevent the tree from shaking due to the collision between people and animals and the strong wind.

② shade canopy: after April, the shade canopy will be erected on three sides of the tree (except the northwest) to prevent direct sunlight and reduce water transpiration. The cool weather can be removed in October.

③ watering: the roots of the newly planted trees are damaged and the water absorption is weak, so the amount of water should not be too much, so as to avoid mildew and rot of the roots. But not too little, otherwise the tree will lose water and die.

④ infusion: infusion can meet the water and nutrient needs of the appendage, and can greatly improve the survival rate of transplanting. Infusion is usually carried out from April to September. Before transfusion, use a woodworking drill at the base of the tree to drill 3mi 5 infusion holes at a 45-degree angle from top to bottom, deep to the pith. The solution was then prepared with 0.1g of water-soluble human ABT6 rooting powder and 0.5g of potassium dihydrogen phosphate per liter. Hang the bottle containing the liquid in a high place, insert the trunk syringe into the infusion hole, turn on the infusion switch, and the liquid can be injected into the tree. After the infusion, pull out the needle and plug the infusion hole with cotton balls. When the next infusion is needed, the cotton ball can be clipped out and the infusion can be carried out. The frequency and interval of infusion are determined according to the degree of drought, temperature and plant water requirement. After the plant is completely out of danger, seal the infusion hole with Bordeaux liquid.

Osmanthus fragrans cultivation techniques Special Topics of Osmanthus fragrans cultivation techniques China Osmanthus net hosts China Osmanthus net? Osmanthus fragrans cultivation

Sweet-scented osmanthus cultivation techniques pay attention to the cultivation techniques of sweet-scented osmanthus trees cutting cultivation techniques of sweet-scented osmanthus trees cutting cultivation techniques of sweet-scented osmanthus trees cutting cultivation techniques of sweet-scented osmanthus trees in May and June cultivation techniques of sweet-scented osmanthus trees in May and June cultivation techniques of sweet-scented osmanthus trees cuttage propagation of sweet-scented osmanthus trees in summer cultivation techniques of sweet-scented osmanthus trees in spring Osmanthus fragrans cultivation techniques transplant Osmanthus fragrans transplant techniques (I) Osmanthus trees transplant Osmanthus fragrans cultivation techniques key points Osmanthus fragrans trees transplanting techniques propagation and culture sweet-scented osmanthus trees cultivation and propagation techniques Osmanthus fragrans seeds harvesting and storage (2) Osmanthus fragrans cultivation techniques harvesting sweet-scented osmanthus trees cultivation techniques Flower seed harvesting treatment sowing sweet-scented osmanthus tree cultivation techniques seed storage sweet-scented osmanthus tree cultivation techniques difficulty of sweet-scented osmanthus seed emergence production practice and evaluation of sweet-scented osmanthus cultivation techniques after seed sowing production practice and evaluation of sweet-scented osmanthus cultivation techniques how to control sweet-scented osmanthus rotten roots how to control sweet-scented osmanthus seedlings production practice of sweet-scented osmanthus cultivation ground striping method of sweet-scented osmanthus tree cultivation air striping method osmanthus main diseases of sweet-scented osmanthus Prevention and control of iron deficiency in sweet-scented osmanthus the occurrence of seedling quenching disease and control of more sweet-scented osmanthus diseases The countermeasure that potted sweet-scented osmanthus does not blossom is how to preserve sweet-scented osmanthus trees in this way, how to protect sweet-scented osmanthus trees, how to fertilize flowers in winter, how to protect sweet-scented osmanthus trees in winter, how to water sweet-scented osmanthus trees, why sweet-scented osmanthus trees cannot bloom without branches of sweet-scented osmanthus trees, the cultivation methods of sweet-scented osmanthus trees

Professor Xiang Qibai, 75, is originally from Anjiang, Huaihua, Hunan Province. he is currently director of the Osmanthus Research Center of Nanjing Forestry University, vice president of the Osmanthus Branch of China Flower Association, vice chairman of Jiangsu Botany Society, famous botanist, plant taxonomist, Araliaceae expert, sweet-scented osmanthus expert, authoritative garden expert. There is an in-depth study on the cultivation techniques of sweet osmanthus trees. Read more

Hu Yimin, director of the Office of Science and Technology support Group of World Bank afforestation project and director of Garden Flower Research Institute. He is the author of many books on cultivation techniques of sweet-scented osmanthus trees, such as "Hui style bonsai", "complete Handbook of ornamental Flower Plant cultivation" and so on. Read more

Wang Yan's cultivation techniques of Cinnamomum cassia have been handed down, which plays a great role in promoting the development and cultivation techniques of Cinnamomum chinense. Read more cultivates excellent enterprises of Osmanthus fragrans

Guilin breeze sweet-scented osmanthus nursery garden thick Lijiang water, light sweet-scented osmanthus fragrance. The landscape of Guilin is the first in the world, and the sweet-scented osmanthus in Guilin is fragrant. Sweet-scented osmanthus is the city flower of Guilin. When autumn comes to Guilin, the whole city is filled with fragrance. Guilin sweet-scented osmanthus has a long history and excellent varieties.

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Main Diseases and insect pests in Osmanthus fragrans cultivation and their Control

Key points of cultivation techniques of sweet-scented osmanthus trees in 2008 at 23purl 00h drought must be paid attention to in sweet-scented osmanthus trees cultivation. Waterlogging. Diseases and insect pests. Sweet-scented osmanthus is adapted to the vast subtropical climate. Sex likes to be warm and moist. The average temperature in the planting area is 14: 28 ℃, the average temperature in July is 24: 28 ℃, the average temperature in January is more than 0 ℃, the lowest temperature is-13 ℃, and the optimum temperature is 15: 28 ℃. Humidity is very important for the growth and development of sweet-scented osmanthus. If it encounters drought, it will affect its flowering. Strong sunlight and shade are disadvantageous to its growth, and it is generally required to light 6-8 hours a day.

Six points for attention in the cultivation of Osmanthus fragrans

24.12.2008 at 23 at 00h Osmanthus fragrans cultivation techniques pay attention to the links that sweet-scented osmanthus trees grow twice a year in spring and autumn, grow well in spring shoots, sprout in March, develop in late April, and have grown into semi-old branches in late June. According to its growth law, the following six links should be grasped in the process of sweet-scented osmanthus cultivation. First, the appropriate period of cutting, second, the preparation of seedling bed, third, the preparation of cuttings, fourth, the application of rooting agents, fifth, cutting methods, sixth, post-cutting management. From the beginning of seedling raising to 7 ~ 8 years before the age of 7 ~ 8 years, it can be counted as the juvenile stage of the tree. During this period, the plant grew vigorously, shoots many times a year, the number of branches increased rapidly and the crown expanded. It is mainly characterized by longitudinal growth. After 7 ~ 8 years to 20 years or so, it can be defined as the young adult period of the tree. The growth of the tree is robust, and the development of the crown gradually changes from longitudinal growth to horizontal growth. The angle of the main branch increases, and the secondary shoots can be seen in some of the trees that grow well. In this period, the crown and green leaves are thick, the tree shape is round and plump, and the new root is easy to grow after transplantation, and the tree potential recovers quickly, which is suitable for the greening application of landscape engineering.

Four steps of cultivation techniques of Osmanthus fragrans

Cultivation techniques of sweet-scented osmanthus trees for 24.12.2008 at 23purl 00h. 1. Select suitable varieties of sweet-scented osmanthus. There are many varieties of sweet osmanthus with high ornamental value, and the excellent varieties include osmanthus, cinnamon, laurel, cinnamon, cinnamon, osmanthus, etc., among which the aroma of osmanthus is rich, flowering is more, ornamental and economic value are high. The period of sweet-scented osmanthus in the four seasons is long, and it will blossom except in the severe winter and heat, especially in autumn, but the tree type is short and the aroma is lighter, so it is only suitable for planting and ornamental in the garden. 2. The cultivation of sweet-scented osmanthus: Osmanthus fragrans can be cultivated by sowing, leaning, cutting, pressing, cutting and other methods, generally mainly by grafting and cutting. The rootstock is lobular privet, which can blossom in the same year after joining, and the grafting time is mostly carried out in summer. A large number of sweet-scented osmanthus seedlings can be propagated by cutting method, and the time is mostly in February when the sap is about to flow (solar calendar). In order to promote rooting and prevent diseases, the cuttings were sprayed with 800 ppm trichlorfon solution one month before cutting, then disinfected with lime water 10-15 days before cutting, and soaked in 10 ppm naphthalene acetic acid solution for 8-10 hours before cutting. Immediately after cutting watering, and often maintain a certain degree of humidity, but also in the seedbed above the establishment of a sunshade net. It can take root in about 2 months. Once transplanted in the second year, it can be planted in the nursery in the third year. 3. When harvesting and processing blossoms in September and October, the sweet-scented osmanthus is harvested and compacted with alum (3.5%). After a few days, the juice is pressed to maintain the weight of the original flowers, and then the same amount of sugar is added to mix well. It can be used as raw materials for sweet-scented osmanthus steamed buns, sweet-scented osmanthus dumplings, sweet-scented osmanthus wine and sweet-scented osmanthus preserves. The collected sweet-scented osmanthus can also be extracted with petroleum ether as solvent, the extract is clarified, filtered and concentrated at atmospheric pressure and low pressure, and finally deethered to make sweet-scented osmanthus extract. The yield of Osmanthus fragrans extract is about 0.17%. The pure oil of sweet-scented osmanthus can be obtained by repeatedly extracting the extract with ethanol, which is a natural and valuable spice. The extracted sweet-scented osmanthus residue can be used to prepare general food by adding an appropriate amount of sweet-scented osmanthus essence and white sugar to become sweet-scented osmanthus sugar. 4. Cultivation environment and fertilizer and water management: sweet-scented osmanthus likes drying, generally does not need irrigation, appropriate watering can be done, but good soil drainage is required. Usually big trees branch once a year and young trees branch 2-3 times a year. It can be fertilized once before branch or flowering in June, September and December every year. It is not suitable to apply heavy fertilizer at the initial stage of sprouting in spring, and pig and cow dung and bean cake are the best fertilizers. From May to October, the soil should be ploughed, loosened and weeded in time to maintain soil moisture and avoid weeds competing with trees for fertilizer.

Examples of cultivation techniques of Osmanthus fragrans

24.12.2008 at 23pur00h cultivation techniques of sweet-scented osmanthus trees there are few studies on cultivation techniques of sweet-scented osmanthus trees, and some fields of cultivation techniques of sweet-scented osmanthus trees are even blank. The growth and development of sweet-scented osmanthus and the establishment of tree crown is one of them. The backbone structure of sweet-scented osmanthus tree is not only related to the shape and growth rate of the crown, but also further affects the landscape effect and survival life of the tree. Examining the existing garden application of sweet-scented osmanthus trees from the point of view of scientific tree structure, it is found that there are many errors in principle. However, once these canopies are formed, it is almost impossible to readjust them. Therefore, good tree construction must start with young trees and nursery cultivation. This paper introduces the scientific basis and technical application of soil shaping in single-stem sweet-scented osmanthus nursery under the condition of grafting. Sweet-scented osmanthus is an evergreen tree species, which has the habit of producing new shoots many times a year, usually in spring, summer and autumn. The adult trees with basically completed body development and full crown are mainly spring shoots, while summer and autumn shoots are rare. In addition to spring shoots, young and middle-aged trees also produce summer and autumn shoots. The occurrence of summer and autumn shoots depends on the strength of the trees. The young trees grow vigorously, and when the fertilizer and water conditions are sufficient, the seedlings in the nursery can continuously produce new shoots throughout the growing season, including spring shoots, summer shoots, summer and autumn shoots, autumn shoots and late autumn shoots. From the beginning of seedling raising to 7 ~ 8 years before the age of 7 ~ 8 years, it can be counted as the juvenile stage of the tree. During this period, the plant grew vigorously, shoots many times a year, the number of branches increased rapidly and the crown expanded. It is mainly characterized by longitudinal growth. After 7 ~ 8 years to 20 years or so, it can be defined as the young adult period of the tree. The growth of the tree is robust, and the development of the crown gradually changes from longitudinal growth to horizontal growth. The angle of the main branch increases, and the secondary shoots can be seen in some of the trees that grow well. In this period, the crown and green leaves are thick, the tree shape is round and plump, and the new root is easy to grow after transplantation, and the tree potential recovers quickly, which is suitable for the greening application of landscape engineering. Sweet-scented osmanthus trees have grown up for more than 20 years. The tree potential gradually stabilized, basically only once a year to draw new shoots, the crown gradually approached the height of the variety, the canopy bore branches began to die, backbone branches appeared, the green leaf layer transferred to the periphery. With the continuous extension of the big branch, the growing point of the branch tip and the photosynthetic surface of the green leaf layer are farther and farther away from the root tip cells, and the senescence is also intensified. When the expansion of the crown reached the limit, the outer branches began to die, the growth center fell back, the latent buds on the bald backbone branches in the middle and lower part of the crown germinated, new branches were produced, and the tree entered the aging renewal period. According to observation and investigation, several common disadvantages of the crown structure of sweet-scented osmanthus trees can be summarized as follows: 1. Multi-backbone, 2. Medium dry bulls, 3. Big branches are too many and too dense, 4. Main branches opposite or whorled, 5. The development of tree crown is strong and weak. The above problems are taboos in cultivating trunk-shaped tree crown of sweet-scented osmanthus, which should be overcome. A reasonable backbone branch structure includes several basic points: first, the central axis of the tree is obvious and strong. The main trunk is a single branch, and the middle trunk is also single upward. Second, the primary and secondary is clear, the subordinate relationship of the branches is clear. That is, the main branch is born on the middle trunk, and the secondary main branch is sent out from the main branch. The sharpness of the thickness of all levels of backbone branches is obvious. Third, the number of backbone branches is appropriate, the distribution is reasonable, and there are scattered branches. At the same point of the middle stem, there are more than two main branches at the same time, and the growth potential of each main branch is the same, and the azimuth distribution is uniform. Make sure that the big branches are few and fine, and the twigs are many and dense. Retraction is a way of pruning more than two-year-old branches. Retraction pruning is mainly used for changing the head of backbone branches, changing the extension direction of big branches, opening the angle of main branches and adjusting the balance of growth potential between branches. Thinning and pruning is the complete removal of branches from the base, which is mainly used to deal with branches that grow too densely. For the main branch extension branch, thinning and deleting the overdense whorl branch under it, in order to concentrate nutrients and ensure the normal growth of the extension branch. Thinning and deleting strong branches per unit branch can weaken the growth potential of the branch, balance the tree potential and improve the light. Comprehensive application of technical measures ⑴ 1 ~ 3-year-old grafted seedling management: tree body backbone branch construction, focusing on the young stage, the key to the seedling stage is 1-3-year-old seedlings. Miao farmers in Xiaoshan, Hangzhou are used to using wax as rootstocks. The survival rate of sweet-scented osmanthus grafted with water wax rootstock is high, and the seedlings grow fast, but the grafting compatibility is not good, and the grafting interface is easy to break, even if the diameter of the trunk of sweet-scented osmanthus tree is up to 7cm, the grafting joint is still vulnerable to wind damage. In addition, the water wax rootstock sprouts more, which is not conducive to the growth of grafted sweet-scented osmanthus. In order to overcome these shortcomings, we chose the seedling of Osmanthus fragrans as rootstock, which performed well from the current grafting practice. In the year of grafting, no matter branch grafting, digging grafting or root grafting, all the sprouting tillers of the roots should be wiped out in time before and after budding in order to promote the growth of new buds of the scion. When the new shoot of the scion grows to a height of 15-20 cm, a new shoot with strong growth is selected as the trunk, and the rest of the new shoot is peeled off. As sweet-scented osmanthus is opposite leaves, scion cut buds are often opposite, oblique to the top, showing a horn shape. At this time, if the new shoots on one side are peeled off, the new shoots on the other side will be automatically righted and upright in the process of growth. The growth of sweet-scented osmanthus seedlings grafted on the ground is large in that year, followed by summer and autumn shoots, with a maximum growth of 150 cm in that year. If the fertilizer and water are well managed, the grafted seedlings can generally reach 50-80 centimeters in that year. When the new shoot reaches 40-50 cm, it is best to set up a pillar to straighten the main branch to prevent the new shoot from being broken off by the strong wind. The trunk of a single branch extending in spring, summer and autumn grows too fast, the branches are not strong, there are few branches, and it is easy to form a smooth stem, so it should be coring at about 50 cm to inhibit growth, promote branches and increase the thickness of the trunk. Pay attention to deal with the competitive branches and whorled branches on summer and autumn shoots in time. The ideal annual trunk should be upright and upright, with a height of 50 cm to 80 cm. The leaves from the base to the tip are well preserved and 3-5 branchlets are evenly distributed. For the grafted seedlings of digging and root grafting, the growth of new shoots was relatively small in the same year, and the work of the nursery was mainly to remove sprouting and sprout and control weeds. The second year of grafting is still the key period for trunk culture. the main work from spring sprouting to spring shoot emergence is to cut off the withered and unsubstantial late autumn shoots damaged by freezing in winter, and to cut short the multi-node dense branches of the front buds of the trunk to prevent the emergence of whorled branches. Remove long branches and competitive branches, prune and clean up tufted branches at the base. Sprouting, sprouting and heart-picking are carried out after germination. In addition to continuing to prevent the occurrence of sprouting at the base of the shoot in summer and autumn, it is mainly through coring and twisting branches to prevent the occurrence of whorled branches, competitive branches and growing branches in time, so as to ensure the robust growth of the trunk. When the trunk grows thin and curved, it can also be replaced by nearby overgrown branches, and the original trunk gradually falls back through a short cut. The growth of digging and root grafting was small in the first year, and the spring shoot was clustered in the second year, and the trunk was not obvious. When spring shoots germinate, the methods of wiping buds, coring and twisting branches should be comprehensively adopted for 2 or 3 times in a row, and a robust new shoot should be selected and cultivated as the trunk. Wait for the trunk to develop before cleaning the base sprouting. The shaping and pruning of three-year-old grafted seedlings is not much different from that of the second year, and those basic methods are still used to ensure the growth of the trunk and the development of the middle stem, and the proper allocation of lateral branches, on the basis of which the first layer of main branches are selected. After the growth and closure of the plants in the nursery, it is necessary to transplant them. The best time to transplant is before and after spring germination. Before transplanting, the soil should be deeply turned over and sufficient fertilizer should be applied. Base fertilizer should use mature organic fertilizer, such as pig manure, chicken manure, sheep manure and so on. Principles and points for attention of ⑵ nursery shaping: Osmanthus fragrans seedling nursery shaping is mainly to cultivate good trunk and lateral branches, to lay a good foundation for the construction of a good tree skeleton, but in the actual operation, we should comprehensively consider, weigh the advantages and disadvantages of various technical measures, and grasp the three basic principles. The main principle of light cutting: small seedling stage, small leaf area, each leaf is very precious, pruning should pay attention to reduce the loss of branches and leaves, try to use the means of sprouting, de-sprouting, coring and twisting, and move less scissors. Some seedlings or some varieties, seedlings at the initial stage of more clustered branches, the trunk is not obvious, can be "chaos first and then treatment." Seedlings in the growth process will gradually form a top advantage, after the trunk is clear, and then appropriate guidance, do not act too hastily, forced pruning, slashing. The amount of one-time pruning is too large, the root damage is serious, the seedlings are difficult to recover, and can not achieve the effect of plastic surgery. For some ungrown branches that do not meet the requirements, the larger unit branch order should weaken its growth potential by removing the strong and the weak, leaving the straight and oblique, and then deal with it in stages and fall back step by step, waiting for the main branches to develop and take shape. and then cut off the unnecessary branches. In the final analysis, the malpractice of the backbone structure of sweet-scented osmanthus crown is that the shaping and pruning technology of young trees is not in place and the management is neglected. Once the tree skeleton is established, it is powerless to readjust it. Therefore, the framework of backbone branches must be grasped from childhood. Juvenile period, especially 1-3 years after grafting, is the critical period of culture. Plastic pruning techniques ⑴ de-sprouting and sprouting: de-sprouting and sprouting is a method to erase new shoots before they are lignified. If this work is carried out in time, it can save a lot of organic nutrients and promote the rapid and healthy development of preserved branches. The focus of sprouting and wiping buds is on the root neck of young trees near the ground, which should be carried out many times a year, especially in spring, summer and autumn. These adventitious buds, latent buds sprouting new shoots, strong vitality, fast growth speed, treatment time is slightly delayed, there will be a lot of tufted branches at the base. What's more, some branches grow straight up, competing in parallel with the trunk, disturbing the original tree shape. Due to various reasons, sprouting can not be carried out in time, sprouting has grown, pruning should be completely removed from the base, leaving no living piles, otherwise, the sprouting will be cut more and more. De-sprouting and sprouting after grafting (after branch grafting or bud grafting and cutting rootstock) is particularly important. As the healing of scion and rootstock requires a process, often the scion has not yet germinated, the hidden buds on the rootstock will sprout, compete with the scion for nutrients and reduce the survival rate of grafting. Even if the grafting survives and the scion produces new branches, the growth of tillers is still stronger than that of the scion, and the growth of new shoots of the scion will be seriously affected if it is not treated in time. Therefore, the removal of sprouts after grafting should be carried out many times. ⑵ coring and twisting: coring and twisting are mainly aimed at rapidly growing shoots. Removing the young part of the tip of the new shoot can control the growth height of the new shoot, promote the maturity of the branch and stimulate the branching of the lateral branch. Twisted branch is a sprain of semi-lignified new shoots, which weakens the growth potential of the branch and retains the photosynthetic function of its leaves by damaging the conducting tissue of the xylem. Coring and twisting are used to regulate the growth of new shoots. When there are many branches in the basal part of sweet-scented osmanthus seedlings, when the trunk is not obvious, the new shoots with good growth and relatively strong growth are selected and not treated, and all other shoots are coring or twisting, and the retained shoots are strengthened due to tip advantage. nutrition concentration, height increased rapidly. After repeated operation for 2-3 times, a sturdy trunk can be cultivated. When the trunk grows too fast, it will appear too long, too thin, or competitive branches can be adjusted by coring. ⑶ truncation, retraction and thinning: the mature branches of sweet-scented osmanthus seedlings need to be pruned with the help of pruning. Short cut, also known as short cutting, is to cut off a part of the annual branch in order to reduce the number of buds on the branch, concentrate nutrients, promote the thickening and branching of the branch, and stimulate the cutting bud to produce strong branches. Short pruning is mostly used for pruning the extended branches of the main branches. When cutting short, we should pay attention to choose the fullness degree and bud position direction of the cutting bud, usually choose the well-developed bud as the cutting bud, in order to produce strong elongated branches. If the growth of the short branch itself is too prosperous, the spring, summer and autumn shoots grow continuously, and the single branch extends too long, the latent buds of blind nodes can also be used as cutting buds to promote the branches in the middle and lower parts of the branches. The selection of bud position is mainly to adjust the extension direction of branches. The severity of the cut depends on the thickness of the branch and the stimulation intensity of the desired pruning response. For sweet-scented osmanthus, the front end of the branch is dense, so it is easy to form whorled branches, so the pruning of the extended branches of the main branches is generally cut off the 1x3 of the branches to avoid the appearance of whorled branches. The branch of sweet-scented osmanthus tree is as important as the facial features of the human body. once it is damaged or damaged, the crown will affect the appearance of the tree. Therefore, in order to ensure the perfect shape of the sweet-scented osmanthus tree, the most important first step is to "lose weight", that is, to fold up the branches. Now the harvesting methods of sweet-scented osmanthus trees in this nursery in recent years are provided for your reference. 1: select two symmetrical big branches in the center of the sweet-scented osmanthus tree crown (if there is a main rod, take the main pole as the standard, and find another big branch closest to the main rod), then put the grass rope in the center of the branch and hang the hooks of the gourd. Then slowly tighten the gourd, pull while watching (if you find that the branch is cracked, stop if there are signs of broken branches, fasten the rope and fix it). Tie the rope until the branch is pulled together. In this way, layer by layer from the inside to the outside, tie the rope and fix it until all the branches are folded in. 2: for extra-large branches to prevent the rope from stretching and affecting the loading width, this situation must be strengthened separately. The method is to fix the plank at the outer edge of the symmetrical big branch, then fasten it with iron wire on the surface of the plank, and tie up other small branches directly with a rope. Medical care of sweet-scented osmanthus trees in the process of transplanting, sweet-scented osmanthus trees first went through the process of harvesting branches, cutting roots when digging earth balls, packing, hoisting, transportation, planting and so on. Time ranges from two or three days to seven or eight days at most. At this time, the sweet-scented osmanthus tree has done a variety of surgeries like the human body. Loss of their own too much nutrition, coupled with the original capillaries after planting and the newly planted soil layer needs a period of time to heal to accept nutrients. Although some branches and leaves were cut off after planting, this large family still needs to receive a lot of nutrition. At this time, give sweet-scented osmanthus tree a few bottles of "drip", see picture: at this time sweet-scented osmanthus tree is like a fish in water, bringing vitality. According to the practice of this nursery in recent years, it has been proved that the survival rate can reach 99%. For transplanting big trees in winter, I think that sweet-scented osmanthus trees are basically in a state of hibernation and absorb less nutrients, so they do not have to make a "drip". It is appropriate to make up for "drip" during the period of heating up after spring. All rights reserved? China Osmanthus Osmanthus Network 2009