In order to increase the chemical control efficiency against Sogatella furcifera,reduce insecticide pollution in the environment and protect the control effects of natural enemies,so as to provide basis for IPM of S.furciferain rice fields,the effects of three insecticides on S.furcifera and predatory natural enemy community in mid-season rice fields were investigated by toxicity test in laboratory,field experiment and systematic survey.The results showed that abamectin,pymetrozine and chlorpyrifos had rela...