建国以来,为了消灭“四害”,大量地使用敌敌畏、敌百虫、r—666等杀虫剂,以控制家蝇的繁殖,取得了很大成效。但是由于连年的大量使用,不可避免的使家蝇对上述药剂产生了较高的抗药性,已严重的影响着化学药物的防制效果。近二年我们在市郊 Since the founding of the People’s Republic of China, great achievements have been made in the control of housefly reproduction in order to eliminate “four pests” and to use large quantities of pesticides such as dichlorvos, trichlorfon, and r-666. However, due to successive years of heavy use, houseflies inevitably have higher resistance to the above chemicals and have seriously affected the control effect of chemical drugs. In the past two years we are in the suburbs