5种常用药剂对水稻2代二化螟的防治效果

[目的]了解市场上几种常用药剂防治水稻二化螟的效果。[方法]研究了95%杀虫单SP、35%甲维·毒死蜱ME、10%氟虫双酰胺·阿维菌素SC(稻腾)、20%氯虫苯甲酰胺SC(康宽)和40%氯虫·噻虫嗪WG(福戈)对水稻二化螟的防治效果。[结果]药后7 d,35%甲维·毒死蜱ME、10%氟虫双酰胺·阿维菌素SC、40%氯虫·噻虫嗪WG的保稻效果较好,分别达83.36%、80.62%和84.71%,95%杀虫单SP的保稻效果最差,为62.69%,20%氯虫苯甲酰胺SC的保稻效果一般,为77.54%;药后20 d,几种药剂的保稻效果无显著差异,其中10%氟虫双酰胺·阿维菌素SC、20%氯虫苯甲酰胺SC、40%氯虫·噻虫嗪WG的保稻效果稍好,分别达92.40%、94.47%、91.04%,95%杀虫单SP和35%甲维·毒死蜱ME的保稻效果稍差,分别达87.08%、89.55%;药后20 d,10%氟虫双酰胺·阿维菌素SC和20%氯虫苯甲酰胺SC的防效较好,分别达81.58%和96.45%,95%杀虫单SP和40%氯虫·噻虫嗪WG的防效次之,分别为59.60%和34.71%,35%甲维·毒死蜱ME的防效最差,为26.31%。[结论]该研究结果为水稻二化螟的防控提供了理论依据。

Effects Comparison of Five Frequently-used Pesticides in Preventing the Second Generation of Rice Stem Borer

[Objective] The aim was to understand the control effect of several common pesticides on rice stem borer.[Method] We studied the control effect of 95％ monosultap,0.5％ emamectinbenzoate + 30％ chlorpyrifos,6.7％ flubendiamide + 2.3％ avermectin,40％ chlorantra-niliprole + thiamethoxm and 20％ chlorantraniliprole on rice stem borer.[Result] Seven days after pesticide use,the effects of protecting seedling of 0.5％ emamectin benzoate + 30％ chlorpyrifos,6.7％ flubendiamide + 2.3％ avermectin and 40％ chlorantraniliprole + thiamethoxm were better,which were 83.36％,80.62％ and 84.71％,respectively.And the effect of protecting seedling of 20％ chlorantraniliprole was 77.54％,followed by the 95％ monosultap,with 62.69％.Twenty days after pesticide use,the effects of the pesticides had no significant difference.However,those of 6.7％ flubendiamide + 2.3％ avermectin,20％ chlorantraniliprole and 40％ chlorantraniliprole + thiamethoxm were slightly better,which were 92.40％,94.47％ and 91.04％,respectively.95％ monosultap and 0.5％ emamectinbenzoate + 30％ chlorpyrifos were less effective,their effects were 87.08％ and 89.55％,respectively;twenty days after pesticide use,the control effects of 6.7％ flubendiamide + 2.3％ avermectin and 20％ chlorantraniliprole were 81.58％ and 96.45％,which were best.And 95％ monosultap and 40％ chlorantraniliprole + thiamethoxm were 59.60％ and 34.71％,respectively.The worst was 0.5％ emamectinbenzoate + 30％ chlorpyrifos,and it only reached 26.31％.[Conclusion] The results provide reference for the control of rice stem borer.