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田间小区试验结果表明,20%毒死蜱·高氯乳油对豇豆和白菜地的甜菜夜蛾均有较好的防治效果。在豇豆地甜菜夜蛾卵孵化期施药,1000￣600倍液,药后3d的防效最高,达74.06%￣91.84%,药后7d的防效已下降;在白菜地甜菜夜蛾低龄高峰期施药,药后3d的防效最高,为67.58%￣92.97%。该产品对斜纹夜蛾和菜青虫均有较好的兼治作用,同时对豇豆和白菜安全,可以作为防治甜菜夜蛾的有效药剂推广使用,推荐使用浓度为600￣800倍。
Field trial results showed that 20% chlorpyrifos and high-chlorine EC had good control effects on both beet bean and cabbage field beet armyworm. In the cowpea beet armyworm eggs incubation period of application, 1000 ~ 600 times the liquid, 3d control effect after the highest, reaching 74.06% ~ 91.84%, 7d after the control efficacy has dropped; beet armyworm young age peak The application of drugs, the highest efficacy after 3d medicine, 67.58% ~ 92.97%. The product of both Spodoptera litura and Pieris rapae have both the role of both governance, while the safety of cowpea and cabbage can be used as an effective control of beet armyworm to promote the use of the recommended concentration of 600 to 800 times.