敌百虫和叶蝉散对日本突负蝽的防治研究

Studies on the effect of tugon and isprocarb control Appasus japonicus Vuillefroy

用浸液法测定了敌百虫、叶蝉散对日本突负蝽的毒力,结果表明,敌百虫对日本突负蝽(48h)的LC50为5.456 3mg·L-1,对其主要为害对象鳝鱼苗的安全质量浓度为0.740 7mg·L-1;叶蝉散则分别为0.278 6 mg·L-1和1.022 5 mg·L-1,表现出杀虫效果好,且对鳝鱼急性毒性小,可作为防治日本突负蝽的药剂。

The acute toxicity of tugon and isprocarb on Appasus japonicus vuillefroy was determined by steep application. The trial showed that LC50( tugon on Appasus japonicus vuillefroy in 48h was 5.456 3mg ·L-1, and its concentration of safety to young ricefield eel was 0.740 7mg·L-1, That of isprocarb were 0.278 6mg ·L-1, 1.0225mg·L-1 respectively. The result indicated that the control effect of isprocarb is better than Tugon; it is also safe to young ricefield eel, so it could be advised to control this insect pest.