Pest prevention and control technology of pollution-free vegetables
The pest control technology for the production of pollution-free vegetables is based on the principle of prevention and comprehensive prevention. The strategy focused on biological control, pesticide control and physical control. By carrying out prediction and forecast of diseases and pests, early and difficult treatment of pests and diseases can be achieved. The amount of drugs used is small and the control effect is good. Vigorously promote biological control technology, the first is to protect and use natural enemies of pests, prevention and control of vegetable pests; the second is to promote the application of microbial pesticides to control pests. The use of Bacillus thuringiensis, granulosis virus, polyhedral virus, bacillus, bacillus, bacteria and other microbial pest control vegetable pests. Use vegetable antibiotics such as Isozyme, Nongkang 120 to prevent vegetable diseases. Actively apply agronomic measures and physical measures to prevent vegetable pests and diseases. The implementation of vegetable crop rotation system and intercropping system to control and reduce the occurrence of pests and diseases. Adjust the sowing time of vegetables, avoid the peak period of pests and diseases; moderately widen the pest control indicators, properly retain a few pests, is conducive to the reproduction of natural enemies, and does not cause harm to the whole vegetable. Use biological measures to eliminate pests. One is to use the phototaxis of pests for light trapping; the other is trapping; the third is food trapping; the fourth is yellow trapping; the fifth is high temperature sterilization. Such as solar greenhouses, plastic greenhouses, usually under the conditions of high temperature to achieve the purpose of killing the bacteria. Limited use of fertilizers and pesticides. Limited use of highly effective, low toxicity, low residue pesticides. However, it is necessary to limit the variety of pesticides and their dosage. Each pesticide should be used no more than once a year, and pesticide safety intervals must be strictly enforced. It is forbidden to use pesticides that have been declared banned by the State to ensure that vegetables meet pollution-free standards. China Agricultural Network Editor