Planting technology of Gastrodia elata: what are the reasons for the reduction of Gastrodia elata production?

Alas, it is strange that the output of Gastrodia elata harvested this year is much less than that of previous years. What are the reasons for the reduction of Gastrodia elata production? I hope you can give me a reminder. Thank you very much. After netizens' summary, there are five main reasons for the reduction of Gastrodia elata production. The following are listed in detail for your reference: 1. Armillaria mellea has been passed down many times. Aging and degradation: Armillaria mellea is the only source of nutrition for Gastrodia elata. Therefore, the quality of Armillaria mellea has an irreversible effect on Gastrodia elata. In general, it is required to use pure bacteria that have been detoxified and isolated, or to cultivate bacterial materials with this strain, so as to ensure the effect. However, some farmers in order to reduce costs, or use ordinary bacteria, or use old fungus materials as "bacteria", mixed with some new Linden wood to make it "spread bacteria". If pure bacteria are used for the first time, the method can be used the next year, but, no more than three years, unlimited continuous "transmission", the consequence must be strain degradation, vitality reduction, resulting in Gastrodia elata production reduction. Second, the decline of Gastrodia elata seed vitality: Gastrodia elata production, generally requires the use of hybrids, just as corn seeds, cabbage seeds all use hybrids is the same reason, heterosis can enable people to obtain ideal production results. Traditional hemp seeds are mostly the product of "handed down from generation to generation". In order to reduce costs, some farmers have always insisted on self-use, and finally found that the output is "worse than year after year," but the reason is unknown. Third, the reason for reducing the yield of Gastrodia elata is that the cultivated sand is too fine and the air permeability is poor: like other organisms, Gastrodia elata needs to breathe during its growth. therefore, it is required to use medium-coarse sand in general cultivation, and the soil with high humus should be used when it is cultivated directly with soil. if you use clayey soil or very fine sand such as the Yellow River sand, you can not guarantee the normal growth of Gastrodia elata. Reasons for reduced production of Gastrodia elata. Fourth, long-term stagnant water in the planting site of Gastrodia elata: it is well known that Armillaria mellea can survive and expand in water, but as a plant, Gastrodia elata does not have this ability. Gastrodia elata can be completely wiped out after only 3 days of stagnant water, or it can be "vacuumed" by Armillaria mellea or rot away directly. Reasons for reducing the production of Gastrodia elata. 5. harm of diseases and pests: there are few diseases in Gastrodia elata cultivation, mainly some miscellaneous fungi carried on fungus or Linden wood, which together infringe upon Armillaria mellea and compete for nutrition, so that Armillaria mellea can not grow normally, so that Gastrodia elata can not absorb nutrients normally, resulting in low yield; insect pests are mainly underground pests such as grubs, biting hyphae and Gastrodia elata. Click to get more planting techniques of Gastrodia elata