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云南省农作物种类繁多,受蚜虫危害重,其中小春油菜、蚕豆、小麦;大春烤烟、玉米及花卉、蔬菜等受害尤为严重,在正常年份油菜和蚕豆若不及时治蚜严重影响产量,甚至灭产.防治蚜虫专用药“抗蚜威”,我省已引进推广十余年,近年已产生抗药性,用药量逐年增加,但效果下降.选用广谱的有机磷及菊酯类农药防治蚜虫时,蚜虫及其天敌昆虫一扫而光,同时容易引起蚜虫的猖獗危害,增加用药次数,且效果不佳.因而生产上急需筛选出新的治蚜农药品种.
Among them, there are many kinds of crops in Yunnan Province, which are severely endangered by aphids. Among them, spring rapeseed, broad bean and wheat are particularly affected by spring flue-cured tobacco, corn, flowers, vegetables and other diseases. In normal years, Production and control of aphids drug “pirimicarb”, the province has introduced the promotion of more than ten years in recent years has emerged drug resistance, drug dosage increased year by year, but the effect decreased.Using a broad spectrum of organic phosphorus and pyrethroid pesticides to control aphids , Aphids and their natural enemies swept away the arson, and easily lead to the rampant harm of aphids, increasing the number of drugs, and the effect is not good .Therefore, the urgent need to screen out a new production aphid pesticides.