化学农药防治果树病虫害具有作用迅速、见效快、作用方便和受环境限制小等特点 ,但也暴露出越来越明显的弊端 ,由于过多地依赖化学农药 ,出现害虫抗药性日益增强 ,害虫天敌种群衰减 ,有的甚至濒临绝灭 ,农药防治效果每况愈下。又由于经营和生产主体是千家万户 ,经营者多缺乏专 Chemical Pesticides Prevention and Control of Pests and Diseases Pests have the characteristics of quick effect, quick response, convenient function and small environmental restrictions, but also expose more and more obvious drawbacks. Pest insects are becoming more and more resistant due to the excessive dependence on chemical pesticides. Population decay, and some even near extinction, the effect of pesticide control deteriorating. And because the main body of management and production is tens of thousands of households, operators lack more specialized