【摘要】 高氰戊菊酯与氧乐果以不同的比例混配对菜蚜的毒力测定表明，都有不同程度的增效作用，综合评价以1：3配比最佳，共毒系数为426．73。田间药效试验证明对多种蚜虫均表现出显著的增效作用，最佳使用浓度为75～150PPm，且表现出低浓度比高浓度增效明显的趋势。更多还原

【Abstract】 The toxicity of mixed esfenvalerate and omethoate at different rate on aphids showed different synergistic effect, and the optimum rate was 1: 3, its co-toxicity coefficient Was 426. 73. The field test also showed synergistil effect, and the optimum concentration was 75～150 ppm. Its tendency showed lower concentration had obvious synergistic effect than higher Concentration.更多还原