蔬菜是城市人民每日必不可少的副食品.使用化学农药防治蔬菜病虫害,保护蔬菜生长,增产增收,是蔬菜生产中广泛运用的重要手段,不合理的使用农药,会带来弊病:污染环境、杀伤天敌;蔬菜中农药残留量增加,导致影响人体健康;尤其是滥用高毒农药,还造成人畜中毒甚至死亡的严重后果.因此,菜田合理用药,减少农药对蔬菜的污染,保障人民吃菜安全,是一个 Vegetables are indispensable daily foodstuffs for urban people.It is an important means to prevent and control vegetable diseases and insect pests, increase the production of vegetables and increase the yield of vegetables by using chemical pesticides. The unreasonable use of pesticides brings disadvantages: pollution of the environment , Killing natural enemies; Increasing the amount of pesticide residues in vegetables, leading to the impact on human health; especially the abuse of highly toxic pesticides, but also cause serious consequences of human and animal poisoning and even death .Therefore, vegetable field rational use of drugs to reduce pesticide pollution of vegetables to protect the people eat Food safety is one