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近日,有许多农民反映,台风过后当地水稻田稻飞虱发生量很大,用叶蝉散、吡虫啉防治效果不好,每亩用敌敌畏200毫升防效也不好。其实,叶蝉散、吡虫啉、敌敌畏都对稻飞虱有较好的防治效果。目前在水稻田大量发生的一般是迁飞性害虫褐飞虱,它对吡虫啉等农药产生耐药性的速度要远低于
Recently, many peasants reported that there was a great occurrence of planthoppers in the local paddy fields after the typhoon. With the leafhoppers scattered, the control effect of imidacloprid was not good. The control effect of using 200 milliliters of dichlorvos per mu was not good. In fact, leafhopper powder, imidacloprid, dichlorvos have a better control effect on planthoppers. At present, a large number of migratory pest Nilaparvata lugens (Nilaparvata lugens) are commonly found in paddy fields, which are far less resistant to pesticides such as imidacloprid