Problems needing attention in using pesticides in pollution-free cultivation of eggplant

Cultivation of pollution-free eggplant, to prevent the main guiding ideology to treat eggplant diseases and insect pests, if the disease and insect pests occur, first of all should consider integrated control, such as the use of natural enemies of pests (Trichogramma, Coccinella septempunctata, etc.), pathogens "natural enemies"(such as Jinggangmycin, streptomycin, avermectin, etc.), and with other high efficiency, low toxicity, low residue, and friendly to the surrounding environment chemical pesticides. First of all, we should pay attention to avoid the use of the following pesticides: First, the production of prohibited pesticides: 666, DDT, insecticide, fluoroacetamide, arsenic, Xilisheng, San Li San. II. Highly pesticide: methamidophos, phorate (3911), fenitrothion (Su Hua 203), parathion (1605), parathion methyl (methyl 1605), systemic phosphorus (1059), fenitrocarb, fosfamide, isoprophos, trichlorothion, omethoate, isoamidophos, chloropicrin, dibromochloropropane, 401, fenamethrin, isosalhos methyl. III. High residue pesticides: dicofol and chlordane. IV. Pesticides compounded with the above-mentioned high pesticides and high residue pesticides: such as products compounded and mixed with methamidophos and hydroamidophos. 5. Pesticide varieties that can be registered without verification on vegetables. Secondly, we should pay attention to the problem of safe interval of pesticide application: what is the safe interval of pesticide application? Pesticide residues can be gradually reduced to allowable standards through the action of enzymes in vegetables, the action of soil microorganisms, isomerization or decomposition of pesticides themselves, photolysis and alkaline hydrolysis, especially under the influence of climatic conditions. The number of days between the last application and the harvest date ensures that the residues of harvested vegetables will not exceed the standard, which is called safety interval. Generally, the temperature is 7-10 days when the temperature is high, and 10-15 days when the temperature is low. If the safety interval for a specific pesticide is not clear, it is best to last apply it half a month before vegetables are marketed.