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稻纵卷叶螟是我国主要的水稻害虫之一,常用于防治稻纵卷叶螟的杀虫剂有杀虫双、杀虫脒和乙酰甲胺磷。据报道,植物质杀虫剂印楝油对该虫也有拒食作用。为了全面分析这几种杀虫剂的作用效果,本文测定了它们对二种主要天敌的毒力。 (一)杀虫双、杀虫脒、乙酰甲胺磷对拟环纹狼蛛的毒力测定设6～8个浓度处理(包括浓度为0的的对照组),每种浓度30头成蛛,选择大小相对一致的成蛛供
Rice leaf roller is one of the main rice pests in our country. Insecticides commonly used in the control of rice leaf roller are insecticidal double, chlordimeform and acephate. It is reported that plant insecticide Neem oil also has antifeeding effect on the insect. In order to comprehensively analyze the effect of these insecticides, the toxicity of the two main natural enemies was tested in this paper. (A) insecticidal double, chlordimeform, acephate on the tarantula Tarantula toxicity test set 6 to 8 concentrations (including the control group at a concentration of 0), each concentration of 30 into a spider , Choose a relatively uniform size into a spider