用寇氏法分别测定辛硫磷与氰戊菊酯、辛硫磷与三氟氯氰菊酯、丙溴磷与高效氯氰菊酯复配的单剂LD50 及 95 %可信限以及按等毒性进行混配的农药混剂及 95 %可信限。用预期与实测LD50 对比法、等效应线图解法和logistic回归分析法判断联合作用方式。结果表明 ,辛硫磷与氰戊菊酯混配有协同作用 ;辛硫磷与三氟氯氰菊醋复配有相加作用或协同作用 ;丙溴磷与高效氯氰菊酯复配有协同作用。 3种判断方法的结论略有差异 The single-dose LD50 with phoxim and fenvalerate, phoxim and cyhalothrin, profenofos and beta-cypermethrin, and the pesticide with 95% confidence limit Mixture and 95% confidence limit. Expected and measured LD50 contrast method, the equivalent line diagram method and logistic regression analysis method to determine the joint action. The results showed that synergistic effect of phoxim and fenvalerate was synergistic. Phoxim and cyhalothrin had additive or synergistic effects. Synergism of profenofos and cypermethrin was found. The conclusions of the three methods of judgment are slightly different