几种常见杀虫剂对玉米草地贪夜蛾的控制作用

The control effect of several pesticides on Spodoptera frugiperda

草地贪夜蛾是一种刚入侵我国的世界性迁飞害虫,严重威胁玉米生产安全。本试验选择200 g/L氯虫苯甲酰胺悬浮剂、200 g/L氯虫苯甲酰胺悬浮剂+激健、200 g/L氯虫苯甲酰胺悬浮剂+5%甲维盐微乳剂、150 g/L茚虫威悬浮剂、25%甲维·茚虫威水分散粒剂、60 g/L乙基多杀菌素悬浮剂6个处理开展了田间防控草地贪夜蛾的试验。结果发现,施药后1 d,60 g/L乙基多杀菌素悬浮剂速效性最好,校正防效高达89.24%;药后3 d,60 g/L乙基多杀菌素悬浮剂校正防效最高为94.35%,200 g/L氯虫苯甲酰胺悬浮剂及其与激健、甲维盐复配处理校正防效均在85.00%以上;药后7 d,仍以60 g/L乙基多杀菌素悬浮剂校正防效最高达96.38%,200 g/L氯虫苯甲酰胺悬浮剂及其与激健、甲维盐复配处理校正防效均在90.00%以上,150 g/L茚虫威悬浮剂、25%甲维 茚虫威水分散粒剂校正防效相对略低。本试验首次采取药剂复配和加入激健助剂防控草地贪夜蛾,对延缓害虫抗性、减少农药使用、降低农药残留、科学防控草地贪夜蛾具有积极的指导作用。

Spodoptera frugiperda is a worldwide migratory pest that has just invaded China,seriously threatening the safety of corn production.The test selected 200 g/L chlorantraniliprole suspension,200 g/L chlorantraniliprole suspension+stimulating,200g/L chlorantraniliprole suspension+5%calcium salt microemulsion,150 g/L invitrogen suspension test agent,25%carbaryl granule dispersing granules and 60 g/L ethyl spinosyn suspension agent were tested to carry out the experiment in field control on S.frugiperda.The results showed that the fast-acting effect of 60 g/L ethyl spinosad suspension was the best,the correct control effect was as high as 89.24%;3 days after spraying pesticides,The maximum control effect of the 60 g/L ethyl spinosyn suspension was 94.35%.200 g/L chlorantraniliprole suspending agent and its synergistic effect with the synergistic treatment of Jiajian and Jiawei salt were above 85.00%;7 days after sprayingpesticides,60 g/L ethyl spinosyn suspension was used to correct the prevention.The effect was up to 96.38%.200 g/L chlorantraniliprole suspending agent and its synergistic effect with the synergistic treatment of Jiajian and Jiawei salt were above 90.00%.150 g/L indoxacarb suspension,25%Avi Indigo water dispersible granules,correction effect was relatively low.This test was the first domestic drug combination and the addition of stimulating aids to control the grasshopper moth,which can delay the pest resistance,reduce the use of pesticides,reduce pesticide residues,and had a positive guiding role in the scientific prevention and control of the grasshopper moth.