【摘要】 用4种杀虫剂做防治草地螟的田间药效试验,结果表明:4种杀虫剂防治草地螟均效果满意,其中0.5%阿维菌素EC用量是0.6L·hm-2和0.4%高效氯氰菊酯EC用量是0.45L·hm-2处理效果最佳。药后1d的虫口减退率和校正防效分别为89.03%和85.53%,89.34%和85.93%;药后4、7d的效果明显提高,虫口减退率达96.54%～98.71%,校正防效达96.78%～98.85%,均优于其他处理,且差异显著。更多还原

【Abstract】 Four insecticides was applied to prevent the beet webworm(Loxostege sticticalis)in this paper. The field tests showed that control effects of 0.5%EC abamectin at the rate of 0.6L.hm-2 and 0.4%EC cypermethrin at the rate of 0.45L.hm-2 on the beet webworm(Loxostege sticticalis)were better than others. Results showed that the decrease rate of the insects and the corrected control effect were 89.03% and 85.53%, 89.34% and 85.93% after one day. The control effect increased significantly after seven days. The decrease rate of the insect were from 96.54% to 98.71% and at the same time the corrected control effect come from 96.78% to 98.85% ,much better than other treatments and the differentia is prominent.更多还原