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[目的]明确1.5%甲维·绿僵菌素悬浮剂对斜纹夜蛾的使用剂量、防治效果以及对作物的安全性。[方法]通过小区试验测定1.5%甲维·绿僵菌素悬浮剂对甘蓝斜纹夜蛾的田间药效。[结果]在2.4 g a.i./hm2剂量下喷施,1.5%甲维·绿僵菌素悬浮剂药后3 d对斜纹夜蛾的防效可达72.80%,药后7 d防效达80.19%,效果均好于对照药剂5%甲氨基阿维菌素苯甲酸盐悬浮剂3.0 g a.i./hm2剂量下的同期防治效果,持效期可达14 d。[结论]1.5%甲维·绿僵菌素悬浮剂在防治斜纹夜蛾上具有良好的效果和应用前景。
[Objective] The purpose of this study was to determine the dose of 1.5% Metarhizium anisopliae SC to Spodoptera litura, its control effect and its safety to crops. [Method] The field experiment was conducted to determine the field efficacy of 1.5% Metarhizium anisopliae SC against Cabbage sloth. [Result] The control efficacy against Spodoptera litura was 72.80% after spraying with 2.4 g ai / hm2 for 3 d after application of 1.5% Metavarion Suspension. After 7 d, the control efficacy reached 80.19% , The effect is better than the control agent 5% emamectin benzoate suspension 3.0 g ai / hm2 dose of the same period of control effect, the persistence of up to 14 d. [Conclusion] The 1.5% Metarhizium anisopliae suspending agent had good effect and application prospect in the control of Spodoptera litura.