Planting techniques of Dendrobium candidum how to plant Dendrobium candidum

Time: generally speaking, spring and autumn are the two seasons every year, and spring is better than autumn. Temperature: the suitable growth temperature is 15-28 ℃. It is necessary to strengthen ventilation in summer and prevent frostbite in winter. Moisture: the water content should be kept at 40% 50% in high temperature season in summer and autumn, and within 30% in winter. Fertilizing: start topdressing in the second year. Pruning: cut off some old branches, withered branches and overdense stems before germination and harvest. Pest control: prevention of leaf spot.

Dendrobium candidum is a very popular medicinal material in the current market, and planting Dendrobium candidum is also a good channel for farmers' families to get rich and get well-off. If you want to plant Dendrobium and get good income, you should not only have good market management means, but also master the planting technology.

I. planting technique of Dendrobium candidum

1. Time

The main results are as follows: (1) the cultivation time of Dendrobium candidum is generally spring and autumn every year, and spring is better than autumn.

(2) in Zhejiang area, the best time for cultivation of Dendrobium candidum is from mid-April to late June, when the temperature is 12: 25 ℃, and the air humidity is high, the survival rate of test-tube plantlets is higher and the growth time is longer, followed by mid-September to late October.

2. Moisture and humidity

(1) Water management is one of the key links in the cultivation of Dendrobium candidum.

(2) the newly transplanted Dendrobium seedlings are the most sensitive to water, and it is generally appropriate to control the water content of the matrix at 60% to 70%. During the specific operation, it is appropriate to grasp the substrate with a sense of moisture but not dripping.

(3) the seedlings did not have new roots within 7 days after transplanting, and the air humidity was kept at about 90%. After 7 days, the plants began to produce new roots, and the air humidity was kept at 70%-80%.

3. Temperature and light

The main results are as follows: (1) the suitable growth temperature of Dendrobium candidum is 1528 ℃, so in order to build a temperature environment suitable for its growth, ventilation and heat dissipation should be strengthened in the greenhouse when the summer temperature is high, and the temperature in the greenhouse should be controlled in a suitable range by means of shading shed, spray cooling, ventilation cooling and so on.

(2) when the temperature is low in winter, the greenhouse of the facility should be sealed, and if necessary, the temperature in the facility can be raised by various heating methods to prevent frostbite.

(3) Dendrobium candidum likes shade, so shading measures should be adopted to reduce the light. The shade degree of Dendrobium candidum during the growing period should be about 60%. When the seedlings have just been planted, the greenhouse must be covered with a shade net with a shade degree of more than 70%, so as to prevent strong light exposure from wilting the seedlings and affecting the survival rate.

(4) in summer and autumn with high temperature and high light, the shade net of the greenhouse must be covered well and firmly, because the high intensity light can easily seal the top of the plant early and not grow high, thus affecting the yield.

(5) the shade shed should be properly opened in winter to facilitate light transmission and prolong the growth period. For tree-attached cultivation, the overdense branches attached to the main plant should be cut off in winter and spring every year.

4. Points for attention

(1) the moisture content in the high temperature season in summer and autumn should be controlled as much as possible, and the suitable water content of the matrix should be 40% to 50%.

(2) in the winter after November, the temperature gradually decreased, and Dendrobium candidum basically stopped growing and entered a dormant state when the temperature was below 10 ℃. At this time, the requirement for moisture was very low, and the water content of the substrate should be controlled within 30%.

II. Field management of Dendrobium

1. Watering Dendrobium should maintain moist environmental conditions after planting, so that the plant can grow well. In case of drought, it should be properly watered, but it should not be watered too much, so as to avoid stagnant water and rot roots, resulting in plant death.

2. there are few weeds in Dendrobium planted on trees, and weeds often grow on stones, which should be pulled out at any time, and withered branches and leaves should be detected.

3. Topdressing began in the second year after topdressing, twice a year, the first time in April, using one or more of cruller, oil foot, pig hair, bean dregs or human hair and cow dung, fertilizer mud, adding calcium magnesium phosphate fertilizer and a small amount of nitrogen fertilizer to mix evenly, after fermentation, apply thinly around the rhizosphere of Dendrobium to promote bud growth. The second time in early November, the same thin mud fertilizer was applied around the root of Dendrobium to keep warm for the winter.

4. Before pruning Dendrobium in spring every year, when harvesting Dendrobium, part of the old branches, withered branches and overdense stems should be cut off to promote the germination of new and robust stems. If you plant it on a tree, you should also cut off the branches that are too dense so that the light transmission is moderate.

5. pest control: leaf spot disease often occurs in early summer, the tender leaves show black-brown spots, the spots show yellow around the spots, and gradually spread to the whole leaf, and finally the leaves wither and fall off. In the occurrence period, spray control with 1:1 ∶ 150Bordeaux or 50% carbendazim 1000 times.

III. The main producing areas of Dendrobium

(1) Dendrobium is from Taiwan, southern Hubei (Yichang), Hong Kong, Hainan (Baisha), western to northeastern Guangxi (Baise, Pingnan, Xing'an, Jinxiu, Jingxi), southern Sichuan (Changning, Emeishan, Leshan), southwestern to northern Guizhou (Chishui, Xishui, Luodian, Xingyi, Sandu), southeastern to northwestern Yunnan (Fumin, Shiping, Cangyuan, Mengla, Menghai, Simao, Nujiang River Valley, Sandu). Gongshan area), southeast of Xizang (Motuo).

(2) distributed in India, Nepal, Sikkim, Bhutan, Myanmar, Thailand, Laos and Vietnam.

IV. Processing methods of Dendrobium

The main results are as follows: (1) the processing method varies according to the origin and type, except for fresh use, it can be dried or dried in the sun.

(1) Dendrobium is generally harvested in winter in Sichuan. After removing the leaves and fibrous roots, Dendrobium is centrally stacked and covered with straw or straw mat. 2Murray sprays water once every 3 days, retting for 15 days, scraping off the sheath of the stem with rice husk and drying the Kang, the firepower of the Kang should be uniform and should not be too large, cover the straw mat and sack, turn it once when it is semi-dry, and then the Kang is completely dry.

(2) when processing in Guangxi, scald it with boiling water first, and then rub it while it is hot and dry when baking or baking. The thick and short parts of plants such as Dendrobium candidum are mainly selected for processing into "Xifeng Dou", which are roasted soft with gentle fire, rubbed into a spiral or spring shape, and then baked again and again, so repeatedly baked several times, until the molding remains unchanged, and finally baked to full dry. In the process of processing, it is necessary to get rid of the extra fine roots, leaving only two known as "faucets", and at the same time to keep the thin ends of the stems intact, called "Phoenix tails".

The main purpose of planting Dendrobium is to follow the growth law of Dendrobium and meet the growth needs of Dendrobium. Once Dendrobium is planted and harvested, it needs to be processed. After processing, high-quality Dendrobium can get better sales revenue in the market, so the processing of Dendrobium is particularly important.