The latest course and video of sweet-scented osmanthus cultivation techniques

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 and evergreen all the year round, especially attractive with its faint scent of flowers. It is really "monopolized by three autumn, pressing Zhongfang". It has been 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 split connection, the other is abdominal connection. It is appropriate to select 1-2-year-old sturdy, disease-free branches on adult trees, remove leaves and retain petioles. If the split grafting method is used, the rootstock should be cut from the ground 4Mel 6 cm before the seedling sprouts in spring before grafting. The thickness of the scion should match the thickness of the rootstock, the cutting surface of the scion should be smooth, and the key to the success of split grafting is that the cambium of the rootstock and the scion should be aligned and tightly bound. 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.