16种杀虫剂对截形叶螨实验种群的药效试验

Effect of 16 Types of Insecticide on the Experimental Population of Tetranychus truncatus Ehara

为了筛选出对截形叶螨确实有效的药剂 ,用 16种杀虫杀螨剂 ,采用培养皿叶背喷雾法对截形叶螨实验种群进行了室内药效试验。结果表明 :三氯杀螨醇和速扑杀的药效最高 ,而且这两种药剂在喷药后的第 3天药效已达 10 0 % ;克螨特、高效木虱净、农螨丹和螨克的药效到第 7天也能达到 99%以上。因此 ,防治截形叶螨时最好选用三氯杀螨醇和速扑杀。根据不同情况也可以选用克螨特、高效木虱净、农螨丹和螨克 ;施药时最好是往作物的叶背喷药 。

In order to pick out the efficent insecticide to Tetranychus truncatus Ehara,the laboratory drug_effect test was done on its experimental population by spraying underleaf on culture plates,sixteen types of insecticide were choosed,the result revealed that:The effects of Methidathion and Dicofol were best,they showed 100% effect three days after spraying;Comite,Nonmite and Mitac showed 99% or higher effect seven days after spraying.To prevent Tetranychus truncatus Ehara,it is better to choose Methidathion and Dicofol,Comite,Nonmite and Mitac can be used according to different situations;The best way to increase the insecticidal effect is to spray underleaf