论文部分内容阅读
假眼小绿叶蝉(Empoasca vitis Gothe)是茶园的主要害虫之一,茶园的捕食性蜘蛛(Araneae)是其最主要的天敌。为找到既可有效控制假眼小绿叶蝉又对捕食性蜘蛛影响较小的农药,采用田间药效试验的方法,研究了7种杀虫剂对茶园假眼小绿叶蝉和捕食性蜘蛛的影响。结果表明,对假眼小绿叶蝉防效由高到低依次为虫螨腈(Chlorfenapyr)、丁烯氟虫腈(Butene-fipronil)、噻虫嗪(Thiamethoxam)、吡蚜酮(Pymetrozine)、噻嗪酮(Buprofezin)、氧苦·内酯(Oxymatrine·lactone)和联苯菊酯(Bifenthrin);对蜘蛛的杀伤率由低到高依次为噻嗪酮、吡蚜酮、噻虫嗪、丁烯氟虫腈、氧苦·内酯、联苯菊酯和虫螨腈。其中噻嗪酮、吡蚜酮、噻虫嗪和丁烯氟虫腈对假眼小绿叶蝉的防效较高,药后7 d的防效均高于74.0%,而对蜘蛛的影响较小,药后10 d的杀伤率均低于24.9%。因此,噻嗪酮、吡蚜酮、噻虫嗪和丁烯氟虫腈4种农药适合在生态茶园中使用。
Empoasca vitis Gothe is one of the major pests in the tea plantation, and the predatory spider Araneae in the tea plantation is its primary predator. In order to find out the pesticides which can effectively control the leafhopper green leafhopper and the predatory spider, the effects of seven kinds of insecticides on the green leafhopper and predatory spider of the tea plantation were studied by field efficacy test . The results showed that the control effect of Chlorfenapyr, Butene-fipronil, Thiamethoxam, Pymetrozine, Thiamethoxam, Buprofezin, Oxymatrine · lactone and Bifenthrin. The destructive rates of spiders were as follows: buprofezin, pymetrozine, thiamethoxam, butene Fipronil, oxyntolactone, bifenthrin and chlorfenapyr. Among them, buprofezin, pymetrozine, thiamethoxam and buprenorphine had a higher control effect on the green leafhopper, the control effect was higher than 74.0% on the 7th day after treatment, but had less effect on the spider , Killing rate of 10 d after drug were lower than 24.9%. Therefore, four kinds of pesticides, buprofezin, pymetrozine, thiamethoxam and butene-fipronil, are suitable for use in ecological tea gardens.