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稻瘿蚊于1994年迁入我市后,1994-1996年发生较轻,年平均发生2.4万亩,1997年由于气候异常,稻瘿蚊大面积暴发,全市发生14.6万亩,比常年增加6倍,发生程度严重,老虫区一般出葱率达15-20%,严重田块达45-55%,局部已造成绝收。目前稻瘿蚊防治药剂主要是进口原药国内加工农药,这些农药对控制稻瘿蚊取得了良好效果,但在应用中也存在毒性、成本较高问题,为了筛选高效、广谱、低毒、低成本防治稻瘿蚊的新农药,受省站委托我局开展了大功臣防治稻瘿蚊药效试
After the rice gall midge moved into the city in 1994, it occurred relatively lightly in 1994-1996 with an annual average of 2.4 million mu. In 1997, because of the anomalous climate and a large area outbreak of rice gall midge, the city took up 146,000 mu, an increase of 6 Times, occurs to a serious degree, the general insects area onion rate of 15-20%, 45-55% of serious field block, the local has caused the absolute failure. At present, the Chinese medicine for the prevention and control of rice gall midge mainly imports domestic raw materials for processing of pesticides. These pesticides have achieved good results in controlling the rice gall midge mosquito, but there are also problems of high toxicity and high cost in application. In order to screen high efficiency, broad spectrum, low toxicity, Low-cost prevention and control of rice gall midge mosquito new pesticides, the station commissioned by the Bureau to carry out the big hero against rice gall mosquito efficacy test