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[目的]明确不同作物叶表面对杀螨剂活性的影响。[方法]采用Potter喷雾塔喷雾叶碟法比较丁醚脲、炔螨特和苯丁锡分别对在桑叶、菜豆叶及蚕豆叶上的朱砂叶螨雌成螨的活性差异。[结果]同种杀螨剂在3种作物叶面上对朱砂叶螨的毒力依次为蚕豆叶>菜豆叶>桑叶;3种杀螨剂对蚕豆叶面上朱砂叶螨的毒力依次为炔螨特>苯丁锡>丁醚脲,其毒力分别是其在桑叶上毒力的1.47、2.45、5.41倍;对菜豆叶面上朱砂叶螨的毒力依次为炔螨特>丁醚脲>苯丁锡,其毒力分别是其在桑叶上毒力的1.04、2.71、1.01倍。[结论]由于不同作物叶表面的结构的差异性,影响杀螨剂的毒力,同种杀螨剂在不同作物叶面对朱砂叶螨的致死剂量也存在差异,使用时应根据防治作物选择适当剂量。
[Objective] The research aimed to clarify the influence of leaf surface on the acaricide activity of different crops. [Method] Potter spraying tower was used to compare the activity of diafenthiuron, propargite and dibenzyl tin on female adult mites of the mites Tetranychus cinnabarinus on mulberry leaf, bean leaf and broad bean leaf. [Result] The virulence of the same species acaricide on the spider mites Tetranychus cinnabarinus on the three crop foliage was in the order of broad bean leaf> bean leaf> mulberry leaf. The virulence of the three acaricides on the spider mite Propargite special> benzene Ding tin> Diafenthiuron, its virulence were 1.47,2.45,5.41 times the virulence of mulberry leaves; on the bean leaf surface of the verruca Tetranychus virulent followed by propargite mites> Butyl ether urea> benzene Ding tin, its virulence is respectively in the mulberry leaf virulence of 1.04,2.71,1.01 times. [Conclusion] The lethal doses of the same acaricides to T. cinnabarinus on different crop leaves differed due to the differences in the structure of leaves on different crops and the virulence of acaricides. According to the selection of crop control Appropriate dose.