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[目的]明确4%高氯.甲维盐微乳剂对甜菜夜蛾的田间防治效果。[方法]在苞菜田中,于甜菜夜蛾发生初期,按照不同施药量兑水进行叶面喷雾,计算各处理防效。[结果]该药剂有效成分用量21~27 g/hm2,药后2 d防效为91%~99%,药后5 d防效为92%~99%,药后10天防效为92%~98%,显著优于对照药剂4.5%高效氯氰菊酯乳油和1%甲氨基阿维菌素苯甲酸盐乳油。[结论]该药剂速效性好,持效性显著,可作为防治十字花科蔬菜甜菜夜蛾的有效药剂和替代乳油的环保剂型进行推广使用,推荐用药量为有效成分用量24~27 g/hm2。
[Objective] The purpose of this study was to determine the field control effect of 4% high-chlorine a-carvedil salt micro-emulsion on beet armyworm. [Method] In the early stage of the beet armyworm in the field of Brassica campestris, foliar sprays were watered with different application rates to calculate the control effect of each treatment. [Result] The dosage of active ingredients of this medicine was 21-27 g / hm2, the preventive effect was 91% -99% at 2 d after drug application, the anti-efficacy was 92% -99% at 5 d after drug administration, the anti-efficacy was 92% ~ 98%, significantly better than the control agent 4.5% beta-cypermethrin and 1% emamectin benzoate EC. [Conclusion] The drug had good effect and significant effect. It could be used as an effective medicament for controlling Spodoptera exigua and its substitute for EC. The recommended dosage was 24 ~ 27 g / hm2 .