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How to choose the tuber of gastrodia elata?
Gastrodia elata, which has been planted for many years, is treated by drought and waterlogging prevention, heat preservation and moisture retention, which can make Gastrodia elata grow and reproduce better. It is a perennial herb of Gastrodia in Orchidaceae. Rhizomes are stout, without green leaves, and capsules are oval, usually propagated by tubers or seeds. Its rhizome is used as a medicine to treat dizziness, numbness of limbs, infantile convulsion and other diseases. It is a valuable Chinese medicine. It is used together with Qiongzhen Ganoderma lucidum to treat headache and insomnia. Planting refers to plant cultivation, including planting all kinds of crops, trees, fruit trees, flowers, medicinal and ornamental plants, including food crops, cash crops, vegetable crops, green manure crops, feed crops and so on. Production technology and technological process of forest land cultivation. Site selection, site leveling, construction technical training, branch preparation, fungus branch cultivation, fungus stick preparation, fungus material cultivation, hemp seed preparation, cultivation preparation, cultivation management, harvesting and sales.

Because of the low latitude and high temperature, Gastrodia elata mostly grows in the alpine region at the altitude of 1300~ 1900m, while the latitude is high and the temperature is low. Gastrodia elata is mostly distributed in the low mountains or hilly areas at the altitude of 200~700m, which can be cultivated in secondary broad-leaved forests, miscellaneous shrub forests, mixed forests, miscellaneous cutting piles and economic forests. Slope 15 45. Oil-free trees such as maple, oak, maple, elm, willow, poplar, etc. Soil humus layer is thick or sandy, with good particle structure, porosity and air permeability. The soil moisture content is 45%~60% and the pH value is 5.8~6.7. The gentle slope slightly acidic or nearly neutral black facing east and north is suitable for the terrain below 1000 meters, and the terrain above 1000 meters is suitable for planting southeast or southwest, while the original dense forest and yellow soil are not suitable for planting.

The preparation of fungus material and the preparation of fungus are selected from the branches of auricularia auricula cultivated with high quality, and the mycelium is vigorous, thick, uniform and powerful, and clings to each small fungus branch. When the hyphae are full, hyphae and flora are formed in the whole bottle. The nutrient solution in the bottle is transparent brownish red without turbidity, with white to yellowish transparent semi-solid hyphae secretion on the bottle wall, blue-white fluorescence in the dark, no miscellaneous bacteria on the bottle mouth, and a small amount of brownish red to light black hyphae growing. Squeeze the bag or bottle by hand. It has hardness and no musty smell. You can also dig out the wild roots or forest wood blocks of Armillaria mellea strains that are not polluted by miscellaneous bacteria, grow vigorously and have tender meat, and cut them into sections with the length of 10-20 cm as strain culture branches. In the place of origin, you can also choose a fungus stick without contamination and degradation of miscellaneous bacteria as the fungus branch of strain culture.

A bottle of Armillaria mellea can be expanded to culture 10~ 15 40cm~50cm long fungus material and 2.5kg~5.0kg fungus branches. Strains should be prepared according to the amount of culture. Preparation of branches. Select fresh branches of broad-leaved trees of FAGACEAE with equal diameter 1.5cm~2.0cm, such as branches of birch, chestnut, Broussonetia papyrifera and apple tree, or branches cut when cutting fungus sticks, cut off shoots and leaves, cut into sections of 7cm~ 1cm, dry for 5~7 days, and conditionally use 0.25% ammonium nitrate solution. Cultivation time of Armillaria mellea. Armillaria mellea can be cultivated all year round, and its sexual reproduction is completed in March. The specific amount of training should be mastered by yourself. If the amount is large, it is necessary to cultivate the fungus branches in advance, which is equivalent to the role of the strain.