大豆蚜近年来在我省一些地区猖獗发生,给大豆生产带来严重威胁。大豆蚜再猖獗与连年大面积使用农药有直接关系,因为目前使用的杀虫剂多为非选择性的,而且又多用喷雾或喷粉法防治,杀死害虫同时,害虫天敌也遭大量杀伤,破坏了生态系平衡,使天敌控制大豆蚜作用减弱。故急需既能有效地控制害虫,又能保护天敌的选择性杀虫剂。但筛选这样的杀虫剂难度较大。是否可以利用生态,农药的剂型以及施药方法的选择来达到消灭大量害虫,又较少地杀伤天敌,使化学防治和天敌保护利用有机协调起来,更好地发挥化学防治在综合防 Soybean aphid rampant in some areas in our province in recent years, a serious threat to soybean production. The resurgence of soybean aphid has been directly related to perennial use of pesticides because most pesticides currently used are nonselective and they are mostly used in the prevention and control of spraying or dusting to kill pests. In the meantime, pests and natural enemies have also been massively killed, Destroyed the balance of ecosystem and made the natural enemies control the soybean aphid weakened. Therefore, it is in urgent need of insecticide which can effectively control pests and protect natural enemies. However, screening for such pesticides is more difficult. Whether the use of ecological and pesticide dosage forms and methods of pesticide application can be used to achieve the elimination of a large number of pests and fewer natural enemies so that chemical control and natural enemy protection and utilization can be organically coordinated and the chemical prevention and control can be better utilized