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防治农作物病虫害是确保农业高产优质的重要措施之一。但目前化学防治的农药品种存在三多:乳剂型的多,剧毒的多,高残留的多,给防治带来许多弱点和弊端。一是污染环境,危害人畜健康;二是在杀灭病虫害的同时也杀死了有益生物,破坏生态平衡;三是害虫产生抗药性,农药用量越来越大。因此在病虫防治上,
Prevention and control of crop pests and diseases is one of the important measures to ensure high yield and quality of agriculture. However, there are more than three varieties of pesticides currently used for chemical control: many emulsion types, many highly toxic and high residues, which bring many weaknesses and drawbacks to prevention and control. First, pollution of the environment, endangering the health of people and livestock; the second is to kill pests and diseases while also killing beneficial organisms, undermining the ecological balance; Third, pests produce resistance, increasing the amount of pesticides. Therefore, pest control,