The resistances to diomethoate and dicofol of Yunmenshan strains were reduced by 15.6-times and 27.3-times after omethoate and chlordimeform,dicofol and plictran were used in rotation.

• 采用乐果与杀虫脒、三氯杀螨醇与水胺硫磷交替轮换施药的云门山种群对乐果和三氯杀螨醇的抗药性分别降低15?6倍和27?3倍。