Gastrodia pest control technology
First, diseases The diseases that have a major impact on the yield of gastrodia elata are mainly two types: one is that the diseases caused by the infestation of harmful microorganisms are called pathogenic diseases, and the other is a physiological tuber rot disease. 1. Tuber soft rot disease (1) Disease: The tuber of soft rot disease occurs, the skin is chlorosis, the central tissue rots, the inside of the stem becomes stench-like, and the inside of the tissue is full of yellow-white or brown-red mellifera. Bacteria, rotting in the whole pit when serious. (2) Reasons for the occurrence: 1 The cultivation site was improperly selected, and cultivation with alkaline soil resulted in failure. 2 long-term high temperature environment, seedlings in the process of storage and direct sunlight, or in the environment above 27 °C time is too long, or soaked by water; cultivated by more than 27 °C high temperature or 70% high humidity influences. (3) Control methods: (1) Strict selection of bacterial materials and bacterial beds, and selection of acid soils for sandy soils. 2 Strictly select seedlings, choose pest-free, robust, and not subject to high temperature and humidity hazards; plant management strictly, control the appropriate temperature and humidity, and avoid long-term water or drought within the hole. 2. Miscellaneous bacteria harm gastrodia and bacteria The most serious is the same as the other basidiomycetes of the armillaria, mycelia and bacilli are similar to armillaria, but the pellodes are oblate, there is no luminescence characteristics, and rot is born on the bacteria material. Armillaria compete for nutrition and inhibit the growth of Armillaria. Control methods: When choosing the cultivation site, be sure to choose the environment with less bacteria, no bacteria or less raw land; choose the fine type of armillaria, increase the amount of bacteria, resulting in the growth advantage of Armillaria, In order to inhibit the growth and reproduction of bacteria; cultivation of bacteria and cultivation sites should be digging drainage ditch; timely sterilization, such as found in the cultivation process of bacteria, it is necessary to take timely preventive measures. Second, pest insect pests Gastrodia elata, collembola, cockroaches, scale insects, termites and so on. Control methods: (1) For each 100m2 of earthworms and cockroaches, dilute with 90% trichlorfon or 50% phoxim 0.15kg plus a small amount of water, and mix 10-15kg of fine soil to produce toxic soil. (2) The worms are small in size and white in color. They generally live at high humidity and are most active at 20-25°C. They can reproduce 6-7 generations a year. The main bacillus in the cortex of the bacteria bar is also eaten, and the stem of the gastrodia elata is also eaten, causing a bad hole in the gastrodia tuber. It can be sprayed or watered with 1:800-1000 times of dichlorvos or 0.1% Rhizoctonia during the peak period, or it can be smoked with 4 pieces/m2 of aluminum phosphide. (3) termite termites in addition to harm the bacteria material, but also foraging raw gastrodin stems and tubers, in the end of the damage can be used to kill ant poison powder. (4) scale insects are mainly whitefly damage gastrodia tubers. In general, it is brought into the cave by trees such as fungus materials and new materials. After the damage, the growth of Tianma weakens and the quality of the plants decreases. In the event of a hazard, this hole should be timely excavated in Tianma, all processed into a commodity hemp for sale, and it is strictly forbidden to leave seed, and this point is burned to prevent propagation. (Zhou Xianfang)