Introduction to the Origin and cultivation History of Peanut

Peanut is a kind of nut which is rich in production and widely eaten in China, also known as peanut, evergreen fruit, indigo, etc., is an annual herb of Rosaceae, and should be planted in sandy soil areas with warm climate and moderate rainfall. Mainly distributed in Brazil, China, Egypt and other places, let's take a look at when peanuts entered China.

When will peanuts enter China?

Peanuts may have been introduced into China during the Ming Dynasty (1530 AD). Columbus discovered America in 1492, which drew Europeans' attention to this so-called "new continent". After the successful colonization of America, the Spaniards established colonies in the Philippines in South Asia in the late 16th century. Some American crops began to be introduced into the Philippines, then spread from the Philippines to all parts of South Asia, and further spread to China.

Where is the origin of peanuts in China?

Peanut is one of the three major oil crops in China, which is planted in a wide area, except Xizang, Qinghai and Ningxia. Domestic consumption and export peanut producing areas are mainly concentrated in the North China Plain and the coastal areas of the Bohai Sea, among which exports to Europe are mainly Shandong, Liaoning, Hebei and other provinces. Due to suitable climate and soil conditions, these provinces produce peanuts of high quality and good taste. Enjoy a good reputation in the international community, its total peanut exports account for more than 85% of the country.

What are the variety types of peanuts?

1. Common type: the common type peanut has thick pod shell, smooth vein, cocoon-like pod, no keel and oval seeds, which are the main cultivated varieties in our country.

2. Bee waist type: the pod shell of bee waist type peanut is thin, the vein is remarkable, there are keels, there are more than three seeds, sometimes there are two grains, and the seed coat is dull and dull.

3. Multi-grain type: there are many seeds in the pod of multi-grain peanut, showing a string of beads, thick shell, smooth vein, red seed coat and sometimes white seed coat.

4. Pearl type: the pod shell of pearl peanut is thin, the pod is small, there are generally two seeds, and the kernel rate is high. The seeds are full, mostly pick-shaped, and the seed coat is mostly white.

Planting techniques and key points of cultivation and management of tea oil tree

China is the origin of Camellia oleifera. Camellia oleifera, belonging to Theaceae, is the main and unique woody oil tree in China. Camellia oleifera has a long life and strong adaptability. It can grow in hills, mountains, ditches and roadsides, and does not compete with grain and cotton for land. Camellia oleifera can not only afforest barren hills and conserve soil and water, but also is an evergreen broad-leaved tree with thick leathery leaves and smooth trunk, so it is also an excellent tree species for fireproof forest belt.

Distribution and cultivation

The suitable cultivation area of Camellia oleifera refers to the suitable growing area of Camellia oleifera which aims at oil production. The distribution boundary of Camellia oleifera in China is 23 °30 °N from 31 °00 °N and 104 °30-# 39 °E from 39 °to 121 °25 °E. the main cultivated areas are 23 °~ 30 °N. In the distribution area, it belongs to the humid monsoon climate in the middle subtropics and is rich in hydrothermal conditions.

Features and characteristics

1. Morphological characteristics: Camellia oleifera is an evergreen small tree, up to 4mur6 meters high, short 2mur3meters. The flower is bisexual, sessile, blossoms in the middle and late October, and the fruit does not mature until October of the following year. Therefore, the flower and fruit of Camellia oleifera are both present at the same time.

2. Suitable conditions: Camellia oleifera prefers a warm and humid climate, requiring an annual average temperature of 14 ℃, a minimum monthly temperature of no less than 0 ℃, a maximum monthly average temperature of 31 ℃, a relative humidity of 74 ℃, an average annual rainfall of more than 1000 mm, and a uniform distribution of sunshine of 1800 ℃ for 2200 hours. The acid yellow soil with PH value of 5 Mel 6 is the most suitable for the soil with lax requirements, strong adaptability and barren soil. However, the loose, deep, well-drained and fertile sandy soil is especially beneficial to the growth and development of Camellia oleifera. Camellia oleifera, which grows in the sunny mountains to the south or southeast and southwest, has a stout trunk, an ovate crown, much fruit and high yield. Camellia oleifera is a deep-rooted tree species with well-developed main roots and more than 1.5 meters downward. Camellia oleifera has the characteristics of sprouting and tillering and strong regeneration ability. making use of this characteristic, we can renew and transform the old residual forest and nurture the forest with new branches after cutting.

3. Growth and development process.

① shoots: Camellia oleifera has spring shoots, summer shoots and autumn shoots. Most buds differentiate on spring shoots, which account for more than 98% of new shoots. Before the full fruit period, the spring shoot grows vigorously, and after the full fruit period, the spring shoot grows slowly.

② flowers: flower buds began to differentiate on spring shoots in April, the early flowering stage was in the early and middle of October, the flowering stage was in late October, and the last flowering stage was from late November to December. Each flower lasts about 6 days from blooming to withering. The stigma was normal on the 1st-2nd day of flowering and began to wither on the 3rd-4th day. The pollen on the stigma had the highest germination rate, the strongest vitality and the easiest fertilization on the 1st-2nd day. Camellia oleifera is generally pollinated by insect pollination, and the effect of cross-pollination, especially cross-pollination is good. The flowering period is warm and sunny, the insects are active, and the flowering fruit rate is high. The fruiting rate of self-pollination, initial flowering and late flowering was low. Therefore, soil wasps should be protected and released in the forest to improve pollination rate and seed setting.

③ root system: the root system began to move in the middle of February, the fastest growing period was from late March to mid-April, and the root system also grew fast and lasted for a long time from June to July. The root system grew very slowly from late December to early February of the following year.

Seedling cultivation

1. Seedling raising: the method of strip sowing is suitable. Seeds can be sown in winter and spring. Winter sowing is in November and spring sowing is from February to March. Winter sowing ditch width 10~12cm, furrow distance 18~21cm, deep 4~5cm, sowing amount 100,125kg per mu. The seeds should be selected and disinfected with water before sowing, covered with 3~4cm after sowing, and then covered with a thin layer of straw, which should be uncovered in late April. Available nitrogen fertilizer can be applied when the seedling height is about 10cm, and compound fertilizer can be applied when there are 3-5 true leaves. The seeds of container seedling method are directly sown in the nutritious soil of container bag after accelerating germination. Afforestation is not limited by season, high survival rate, rapid growth and development, so it is an efficient seedling raising method. For the seedlings propagated directly by Camellia oleifera seeds, the seedlings should not be used for afforestation because of the shortcomings of large differentiation of offspring, serious degradation of varieties, irregular forest phase, inconsistent ripening period of tea fruit, late fruit hanging time, late full fruit stage and so on.

2. Asexual breeding

① cutting seedling raising: the soil in the nursery used for cutting is divided into two layers, the surface layer is mixed with yellow core soil at 1:1 or 2:1 (the ratio depends on the viscosity of yellow soil), the thickness is 6: 10cm, the lower layer is fertile soil, the loose layer is about 10cm, and the pH value of cutting soil is less than 6. Cuttings should be taken from individual plants or fine clones of fine varieties, requiring annual Lignified spring shoots with sturdy and straight axillary buds and complete leaves. Put the cut branches in a cool place and spray water to moisturize and prevent the extrusion from getting hot. According to the length of internodes of branches, cut into long spikes or short spikes, and short spikes are better. The short spike has 1-2 leaves per panicle and has long 3~5cm. Cut (cut) ear strips with 1 bundle per 20 sticks, soak the cut in 200 mg / kg naphthalene acetic acid solution for 12 hours for 16 hours, there should be a shade shed after cutting, the temperature in the shed should not exceed 30 degrees Celsius, when it is too high, ventilation and cooling should be opened and watered frequently, and the survival rate is generally more than 80%. If the condition is good, the effect of cutting is better by using closed or automatic spraying device, but the survival rate of afforestation of Camellia oleifera seedlings is low because of its underdeveloped root system and poor drought resistance, so it should be used cautiously and cuttings should not be advocated.

② grafting seedling: mainly using bud seedling rootstock grafting, common Camellia oleifera seedlings as rootstock, sowing seeds 35 to 45 days before grafting, sowing seeds on sand bed or nutritious soil, about 3cm, slightly compacted after sand covering, sand thick 1Ocm, sand too thin seedling stem coming out of the ground early and fine aging, which is disadvantageous to grafting. The seedlings were grafted when they had 2 or 3 leaves after sand (soil). Bud seedling rootstock grafting is generally used by crackling method, and its procedure is as follows: first, take out and wash the bare root seedlings in the sand bed, cover with a wet cloth and put them on the indoor operating table (table) for backup. The second step is to cut off the 1~1.5cm above the bud with a blade (one-sided blade), then cut open from the center of the pulp in the middle of the rootstock, the opening is about 1cm, the radicle retains 5-6cm, and the excess part is removed. The third step is to cover the rootstock with a thin aluminum sheet (or toothpaste skin) that is slightly larger than the diameter of the rootstock. First, the thin aluminum sheet which is about 3cm in length and about 1cm in width is made into a cylinder (the diameter can be large or small), which is easy to cover the anvil. The fourth step is to cut the spike. On both sides of the lower end of the scion away from the petiole 1~2cm, each cut a 15-degree double oblique wedge about 1cm, and then cut off from 2 mm above the petiole to form a scion with one bud and one leaf. Put it in clean water for use. Finally, insert the cut scion into the cut of the rootstock, align the cortex on one side of the petiole, and gently lift the sleeve to make the rootstock close together. The planting depth is that the seed shell at the base has just entered the soil, the planting is compacted, the root is not left, it is moisturized by water after planting, and then planted in a 80% transparent and 20% moisturizing shed with sunshade net. The sealing material is generally made of plastic film, which is both transparent and moisturizing. The humidity in the cover is 85% 90%, the temperature is 25-28 ℃, and the temperature shall not exceed 33 ℃. If it is too high, the film will be properly opened, ventilated, cooled, watered and moisturized. When most scions sprout and open leaves (about one and a half months), the moisturizing cover can be removed and shaded until autumn, and then the management of sprouting, fertilization and weeding can be carried out in time according to the situation.

Land preparation and afforestation

1. Land preparation

Camellia oleifera is not strict on afforestation land, but in order to achieve high and stable yield, it is appropriate to choose sandy loam and light clay loam with deep soil (soil thickness above 60cm, at least more than 40cm), good drainage, good fertility, moist, breathable and slightly acidic (pH range: 5.5mur6.5) (limestone mountain area can not be planted). However, try to avoid planting in non-water-retaining sandy soil and poorly drained land with high sand content on the top of the mountain, and soil preparation should be carried out in autumn and winter one year before afforestation.

① full reclamation land preparation: full reclamation land preparation can be used in flat or gentle slope land (slope less than 15 °), land preparation can be carried out around September, depth: mountain 20--25cm, hilly 25--30cm. To remove stones, roots and other sundries, let the soil mature in the sun, rake flat in November and dig holes around the mountain at a fixed point of 60 × 60 × 60cm.

② banded soil preparation: horizontal banded soil preparation is necessary if the degree is more than 15 °. The horizontal belt of the ring mountain is opened according to the row spacing, the outer height is high and the inner is low, the bandwidth depends on the slope, the slope is small, the slope is large and the belt is narrow, and the hole is dug at a fixed point according to the distance between plants, and the specification is the same as that of full reclamation.

③ block land preparation: for land types with a larger slope of more than 20 °and less than 25 °, or areas such as mountain ponds, reservoirs and traffic lines with high requirements for soil and water conservation, block hole reclamation should be adopted, fixed-point excavation should be arranged according to the "grade" shape around the mountain, and the cave size is generally 50 × 50 × 50cm, and soil and water conservation measures should be added.

2. Afforestation

The initial planting density of pure forest is 2.5m × 2.5m, 2.5m × 3m and 3m × 3m row spacing. The planting density should be determined according to the local conditions, variety characteristics and management purpose. For the foothills and flatter land types with thick soil, 2.5-3 × 3 meters, that is, planting 74-89 plants per mu, and for the lands with poor soil fertility and large slope, the row spacing is 2-2.5 × 3 meters, that is, 89-111 plants per mu. In short, reasonable close planting should be determined according to local conditions, and the coverage density of Camellia oleifera should not be less than 0.6 and not more than 0.8.

There are two methods for afforestation of Camellia oleifera: seedling planting and direct seeding. Planting seedlings and afforestation is carried out in winter and spring, and spring is the best. The essentials are as follows: the topsoil is burrowed, the cave soil is broken, and some organic fertilizer or soil fertilizer is applied in the hole before planting in the place with conditions. The stem of the seedling is straight, slightly deeply planted, the root system is stretched, layered and tight, so that the root soil is closely connected, and the soil is covered with loose soil. The best planting depth of one-year-old seedlings is 1cm at the top of the grafting interface of Camellia oleifera seedlings.

The root neck is lower than the ground 2cm~3cm. In order to ensure survival, do not plant overnight seedlings, all the roots of tea seedlings should be evenly stained with mud before planting, and the mud had better use the more fertile mud and pond mud in paddy fields or ponds. First-class seedlings or biennial seedlings should be selected for afforestation seedlings in order to survive into a forest. In the afforestation of Camellia oleifera, attention should be paid to the allocation of varieties. For those with an area of more than 15 mu, there should be more than 2 varieties, and those with an area of more than 75 mu should have more than 5 varieties for afforestation, and the florescence and maturity of the varieties must coincide. The most suitable period for afforestation is from the first ten days of February to the last ten days of February, and it should be completed by mid-March at the latest. Container seedlings can also be afforestation in the rainy season or planted in autumn and winter.

Direct seeding is carried out in winter and spring, winter sowing is from 11 to December, spring sowing is from February to March, and winter sowing is better. Winter sowing has the advantages of early rooting, quick sprouting, strong seedlings and strong drought resistance, and can save seed storage. Three seeds were sowed in each hole in winter sowing, showing a triangle shape, and the thickness of soil covered after sowing was 4ml 5cm, and the soil covered by spring sowing was about 3cm.

Planting management

1. Planting and management of young Camellia oleifera forest.

The tending period of young forest is 4 years before Camellia oleifera. The tending content includes technical measures such as weeding, seedling cultivation, inter-seedling replanting, pest control, pruning and fertilization and so on.

① loosening soil and weeding: weeding and loosening soil once in the year of afforestation, and then twice a year, the first time is from May to June, and the second time is different in different areas from late August to September. The surface is hot in dog days, so it is not suitable to loosen the soil and weed. The depth of loosening soil is generally suitable for 3~5cm. Afforestation should be shallow in that year, and then deepen year by year; the edge of young trees should be shallow and gradually deepen outward; the loam should be shallow and the clay should be deep.

② young forest fertilization: woodland with sufficient base fertilizer, do not apply fertilizer in the first year. Fertilize twice a year, apply slow-acting fertilizer in winter, such as fire soil ash or other mature organic fertilizer, and apply quick-acting fertilizer such as urea in spring. Early spring is better than summer and autumn, the amount of fertilizer applied per plant per year should not exceed 25 grams, it is best to apply it many times, and the amount of fertilizer applied per plant should not exceed 10 grams each time. The methods include spreading and ring ditch application and so on. Spread fertilizer evenly around the crown, combined with ploughing into the soil; ring ditch application, that is, at the outer edge of the crown, dig wide and deep circular or semicircular trenches of each 20~30cm.

③ young tree shaping: Camellia oleifera young tree shaping method is divided into two steps: the first is to raise dry. Within 1 ~ 2 years after afforestation, all the spring shoots of the terminal bud should be retained to form the trunk rapidly, and the second step is to set the shape. The high 60cm of the trunk leaves 3-4 strong main branches around the trunk, and the number of secondary main branches on each main branch depends on the size of the tree and the distance between the two main branches. The best time for pruning is early spring. Get rid of cuteness after pruning. Pruning young trees should be light rather than heavy.

④ forestland intercropping: interplanting crops, medicinal herbs and green manure with short harvest period in young woodland, ploughing instead of caressing, which is beneficial to the growth of Camellia oleifera and short-term harvest, and improve economic benefits. The selection of intercropping crops is based on the principle of not winning glory, fertilizer and water with Camellia oleifera. Intercropping requires that an area of 1 square meter be reserved for Camellia oleifera. Camellia oleifera woodland should be planted between peanuts, legumes and some green manure plants, but not tall stalks, vines and crops with high water consumption in dry season.

2. Planting management of Camellia oleifera adult forest.

① Reclamation: after Camellia oleifera enters the full fruiting stage, according to the site conditions and variety types, it is necessary to hoe shallowly at least once a year and dig deeply once every 3 years. It usually takes place after the rainy season and before the dry season. The depth is about 10cm. The depth of deep digging should be at 15~20cm after fruit harvest and before sap flow in the following year. Attention must be paid to soil and water conservation of woodland in reclamation. The terrain is gentle, with a slope of 15. The following Camellia oleifera woodland can be completely reclaimed, but depending on the length of the slope, leave water at the top, hillside and foot of the mountain to protect it. The slope is 15. Above, especially the soil developed by sandstone and granite, it is appropriate to use belt reclamation, dig the belt to keep the area, and rotate every other year.

② fertilization: different types of fertilizers were applied according to soil nutrient content, growth status and different growth stages of Camellia oleifera. It is mainly phosphorus and potassium fertilizer and organic fertilizer in the big year, and phosphorus and nitrogen fertilizer in the small year. More than 15kg compound fertilizer is applied per mu every year, and it is applied in conjunction with organic fertilizer.

③ pruning: Camellia oleifera is mainly thinned, heavy cut in Lunar New year, young and young. After the fruit is harvested every year until the sap flows in the following year, cut off dead branches, disease and insect branches, cross branches, thin and weak inner bore branches, foot branches, overgrown branches and so on.

④ adjust density: close planting woodland, usually in 10-12 years, when branches and leaves cover each other. At this time, depending on the situation of the woodland, the density should be adjusted twice within 2 to 3 years, and the sparse forest should be replanted and the inferior forest should be replaced.

⑤ high grafting to change crown: for some inferior plants in the adult forest, after two years of observation and calibration, the superior tree panicle was used, the subcutaneous branch grafting method was adopted, and the rootstock was cut off. The trunk diameter 3-4cm rootstock was sawed off at the dry height of 40-80cm. When the rootstock was cut off, the cortical tear of the rootstock was prevented. Each plant left 2-3 main branches as vegetative branches and shade, and all the rest were removed. Clean the fracture of the rootstock with clean water and dry it, cut the saw with a grafting knife, the cutting surface is high and low, slightly inclined; cut the rootstock, cut the dry skin with an one-sided blade, deep into the xylem, tear the skin in one direction, so that it can be wrapped after grafting. Cut the scion, cut the scion with a single blade on the reverse side of the leaf bud from slightly below the bud base, straight down, about 2 long, slightly xylem in the section, medulla visible at the base, make a short cut oblique below the leaf bud, and then cut off from 2mm above the petiole to form a scion with 1 bud and 1 leaf, put it in clean water, insert the scion, the scion is cut inward, and inserted close to one side. The scion section is slightly higher than the fracture of the rootstock to facilitate the healing of the scion rootstock, and a little skin tearing is left below when bandaging, because the big tree is nutritious and convenient for excessive nutrition. Moisturize with a water-soaked plastic bag, when bagging, leave the moisture in the bag, moisturize, leave the supported bamboo strips outside the bag to facilitate excessive water flow out of the bag, use a newspaper (bamboo shoot clothes) to cover the outer layer of the plastic bag in the east-west direction, 40 days later, go to the moisturizing bag but still need shade. The best grafting time is from mid-late May to mid-June in our city. The same woodland must be completed within 1 ~ 2 years.

Pest control

The main diseases of Camellia oleifera are anthracnose, soft rot, bituminous coal disease and so on. The main pests are stem borer, tea tip moth, longicorn beetle, weevil, ant toad, tea caterpillar, beetle, leaf wasp and so on.

1. Anthrax: prevention and control before winter, 50% carbendazim, 500 times liquid of wettable powder. 50% carbendazim wettable powder 300 times or 50% carbendazim 500 times in summer.

2. Soft rot: 50% carbendazim 300,500-fold solution, 75% methyl topiramate 300,500-fold solution, 50% carbendazim 1000-1500 fold solution, 1amp 100 Bordeaux solution.

3. Root rot: disinfect diseased seedlings such as 1% copper sulfate or dimethazone.

4. Blue-winged longicorn beetle: At the peak of adult emergence, it can spray 500 times solution of 20% fruit emulsion, 1000 times solution of 90% trichlorfon, and 500 times solution of 90% trichlorfon can be sprayed at larval stage.

5. Elephant worm: 90% trichlorfon crystal 1000 times liquid, 80% dichlorvos EC 1:1 mixed with water 1000 times.

The control of Camellia oleifera diseases and insect pests must carry out the integrated control measures of "prevention over cure", based on silviculture technology, combined with biological and pharmaceutical control. During reclamation and fertilization, we should pay attention to burying diseased branches, diseased leaves and diseased fruits deeply, killing eggs and pupae, and cutting down historical diseased plants. We should also protect and utilize natural enemies, such as protecting and cultivating natural enemies such as ladybugs and red ladybugs, parasitic wasps, parasitic flies, fungi, etc., for biological control.

Recovery and treatment

1, mature signs: peel smooth, bright color. The peel of red-skinned fruit is red and yellow, while that of green-skinned fruit is green and white. Seed shell was dark black or brown, shiny, seed kernel white with yellow, showing oily. Harvesting fully mature seeds not only improves oil production, but also reduces the acid value of tea oil. The suitable harvest time is from 3 days before ripening to 7 days after ripening. Cold dew seeds are harvested in mid-October. Frost seeds are harvested at the end of October, and winter seeds are harvested in early November. Early harvesting is prohibited.

2. Harvesting method: It is the period when Camellia oleifera is in bud when harvesting fruits. It is strictly forbidden to break branches and take fruits.

3. Fruit treatment: After the fruit is picked back, the stacking time shall not exceed 5-6 days, and it shall be spread out in the sun. It shall be turned several times a day to promote the cracking of the fruit, remove the impurities, and collect the seeds into the warehouse for pressing.

The planting method and technology of Dendrobium purpureum_Dendrobium purpureum pictures

Dendrobium purpureum is a very common plant, which contains rich polysaccharides. It has the effects of strengthening physique, tonifying spleen and stomach, clearing deficiency heat, protecting liver and gallbladder, strengthening muscles and bones, nourishing yin, promoting blood circulation, lowering blood sugar, inhibiting tumor, brightening eyes, beautifying skin, prolonging life, enhancing human immunity and so on. For such a good curative effect, I believe there are many people who want to understand the planting methods and techniques of Dendrobium purpureum, so that they can plant more high-quality Dendrobium purpureum. The following small series will come to learn about the planting methods and techniques of Dendrobium purpureum together with everyone. In the process of understanding the planting methods and techniques of Dendrobium purpureum, please also enjoy the pictures of Dendrobium purpureum, so that you can have more understanding of Dendrobium purpureum.

[Introduction to Purple Dendrobium] Dendrobium purpureum is also known as Wanzhangxu. It is a plant of Dendrobium genus Orchidaceae. It appears as Dendrobium dentatum and is called the representative of Dendrobium. It originated in Longling County, Yunnan Province, mainly distributed in the east and west of Yunnan, Guizhou, Guangxi, eastern Xizang, Bhutan, northeast India, Myanmar, Thailand, Vietnam and other countries. It is cultivated as an ornamental plant. It not only has very good ornamental value, but also has high medical value. It is welcomed by many people. Its effect is very good. It is a rare herb.

[Dendrobium purpure-growing environment] Dendrobium purpure-bark is mainly distributed in Longling County, Yunnan Province, and grows in the southeast and west of the movement, as well as Guizhou, Guangxi, Vietnam, southeast of Xizang and other areas. It likes to grow in warm, humid, semi-sunny environments. Under normal circumstances, the annual rainfall should reach more than 1000mm, the humidity of the air is generally above 80%, and the average monthly temperature is the best in the subtropical forests of 8 degrees Celsius. Its requirements on the soil are not particularly strict, if it is wild purple dendrobium, need to grow on the thick loose bark or trunk of the soil, there are some wild purple dendrobium grow in dendrobium, vitality is very strong.

[Planting methods and techniques of Dendrobium purpureum] There are many cultivation methods of Dendrobium purpureum, mainly using the method of plant division and propagation. When planting Dendrobium purpureum, it is generally carried out in spring. The humidity in spring is relatively large, and the rainfall is also relatively large, which is very suitable for the growth of Dendrobium purpureum, thus improving the survival rate. When planting Dendrobium purpureum, it is best to choose healthy Dendrobium purpureum without disease and insect harm. The old stems of more than three years can be cut off as medicinal materials, and the new stems of more than two years can be used for reproduction. During propagation, cut off the older roots and plant them again. You can choose to stick to the stone planting, generally choose 30cm plant spacing to dig a pit, use cow dung and mud mixed in a kind of coating in the seed pit plug stone hole or stone trough, coated a little thinner, as long as it does not fall off, you can also use small stones to stabilize.

[Planting management method of Dendrobium purpureum] 1. Watering: In the later stage, Dendrobium purpureum requires less humidity in the air and needs to be watered frequently. Spray watering can be used to increase the humidity of the air. 2. Fertilization: If the growth environment of Dendrobium purpureum is relatively poor, appropriate topdressing should be applied. The first fertilization is generally after Qingming Festival, using nitrogen fertilizer and mixed soil fertilizer of livestock manure. The second time is generally in the beginning of winter before and after the use of peanut shells, rapeseed cake, calcium superphosphate mixed mud paste in the roots can be, if it is outside can still use the way of root topdressing. 3. Crown density: Dendrobium purpureum density is about 60%, to epiphytic branches for pruning, do not over-shadow, resulting in insufficient density. 4. Pruning: in the spring when the new germination, you can cut off the dead stems in the cluster, remove the diseased stems, weak stems, etc., if there are 6-8 years of planting, you can renovate according to the growth of the cluster and re-branch reproduction. Summary: according to the efficacy of purple dendrobium to purple dendrobium planting methods and techniques have some simple understanding, but also enjoy the purple dendrobium pictures, must make good use of purple dendrobium, according to its role to make themselves more beautiful, thank you for your appreciation.

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