梨木虱(Psylla Pyrisuga Forster)是梨树上的主要害虫,历年猖獗发生,为害严重。近几年来,农业生产上对梨木虱的防治仍延用几种传统药剂,致使梨木虱的抗药性逐年增加。目前,生产上常用的水胺硫磷虽然杀虫效果尚可,但若用药量低于800倍,往往会引起药害,造成大的经济损失。为寻求防治梨木虱的新农药品种, Psylla Pyrisuga Forster is a major pest on pears and has been rampant over the years, causing serious damage. In recent years, the prevention and control of pear psylla in agricultural production is still delayed with several traditional pharmaceutical agents, resulting in the increase of drug resistance of pear psylla. At present, the commonly used production of pesticide parathion although insecticidal effect is acceptable, but if the dosage is less than 800 times, often lead to injury, resulting in large economic losses. In order to seek new varieties of pest control pear pesticides,