3%阿维·氟铃脲乳油对甘蓝小菜蛾的田间药效试验

近年甘蓝小菜蛾发生比较猖獗,目前主要防治药剂是2%阿维菌素,根据农业部药检所登记试验要求在甘蓝上摸索试验药剂3%阿维.氟铃脲乳油的最佳防治效果的浓度。试验结果表明,高浓度的3%阿维.氟铃脲乳油处理(用药量45 g/667 m2,有效成分20.25 g/hm2)防治甘蓝小菜蛾效果最好,药后7 d防效达到最高96.63%,显著高于其他处理。

Field Efficacy Trial of 3％ Abamectin+hexaflumuron Emulsifiable Concentrate to Plutella xylostella L.on Cabbages

In recent years, Plutella xylostella L. has occurred frequently on cabbages, and the main control pesticide is 2% abamectin. The test was carried out to screen out the best control concentration of 3% abamectin ＋hexaflumuron emulsifiable concentrate （EC）. The results showed that, the high concentration treatment of 3% abameetin＋hexaflumuron EC, with the pesticide usage of 45 g/667 me and effective component of 20.25 g/hm2, possessed the best control effect to P. xylostella L.. And the highest control efficiency was 96.63%, which appeared on 7 days after applying the pesticide and was significantly higher than those of other treatments.