几种杀虫剂对甜菜夜蛾的防治效果

Efficacy of several insecticides to control Spodoptera exigua (Hübner)

分析了除尽、卡死克、拉维因等5种杀虫剂对甜菜夜蛾的防治效果。结果表明,除尽对该虫有良好的防治效果,击倒性强且持效期长,药后7 d防效高达90.51 %～92.56 %,药后10 d对幼虫防效仍为86.33 %～91.30 %。卡死克对该虫也有较好的防治效果,药后7 d防效最高为92.13 %。锐丹、锐劲特防效偏低。拉维因药后7 d防效最高为88.40 %。

Five insecticides Chlorfenapyr, Cascade, Larvin, Redan, Regent have been tested to control Spodoptera exigua. The results showed that Chlorfenapyr not only had fast and high control efficacy (90.51 %～92.56 %) to Spodoptera exigua (Hübner) in 7 days after treatment but also lasted long period (the control efficacy is still 86.33 %～91.30 % in 10 days after treatment); Cascade had better control efficacy (92.13 %) to the pest in 10 days after treatment. Redan, Regent had lower control efficacy. Control efficacy of Larvin is 92.13 % in 7 days after treatment.