不同药剂对银杏大蚕蛾幼虫的防治试验

Control Experiment of Different Chemicals on Larva of Dictyoploca Japonica Butler

结合成县当地银杏大蚕蛾的生活习性,研究了3种不同药剂(1.2%烟碱·苦参碱乳油1000倍液、40%毒死蜱乳油1000倍液和2.5%高效氯氟氰菊酯2000倍液)对银杏大蚕蛾3龄以下幼虫和3龄以上幼虫的防治效果,结果表明,3种药剂对3龄以下幼虫防效较好,对3龄以上幼虫防效较差。同时,研究了不同浓度的1.2%烟碱·苦参碱乳油对银杏大蚕蛾5~6龄幼虫的防治效果,结果表明,1.2%的烟碱·苦参碱乳油500倍液防治效果最佳。

Based on the living habits of the local Dictyoploca japonica Butler in Chengxian,the control effects of three different pesticides on the larvae below the 3rd instar and above the 3rd instar of Dictyoploca japonica Butler were studied.The results showed that the three pesticides had good control effects on the larvae below the 3rd instar,The control effect on larvae above the third instar was poor.At the same time,the control effects of 1.2%nicotine matrine EC with different concentrations on the 5~6 instar larvae of Dictyoploca japonica Butler were studied.The results showed that the control effect of 500 times of 1.2%nicotine matrine EC was the best.