3种农药对草地贪夜蛾的防效试验

Control Effects of Three Pesticides on Spodoptera litura

选用3种药剂进行玉米草地贪夜蛾防治试验,结果表明:药后6 d应用新型高效、低毒、低残留的药剂康宽(20%氯虫苯甲酰胺SC)的防治防效最好,达94.866%;10亿PIB/m L的甘蓝夜蛾核型棉多角体SC 100 mL/667 m^(2)防效次之,防效为89.732%;天蝎(2.2%甲氨基阿维菌素苯甲酸盐ME)60 mL/667 m^(2),防效为79.464%;药剂均有一定效果,且对玉米生长无不良症状。

Three kinds of insecticides were selected for the control experiment of Spodoptera litura on corn grassland.The results showed that the control effect of kangkuan(20% chloramphetamine benzamide SC) with high efficiency,low toxicity and low residue was the best,up to 94.866%;the control effect of 1 billion PIB/ml nuclear cotton polyhedron SC 100 m L/667 m^(2) of Spodoptera litura was the second,with a control effect of 89.732%;Scorpio(2.2%abamectin benzoate me) 60 mL/667 m^(2) the control effect was 79.464%,the agent had certain effects,and had no negtive symptoms on the growth of corn.