长期使用“1605”等有机磷农药,棉蚜产生了抗药性,防治效果下降,有的按规定加大用农药浓度三倍多,防效仍不理想。为了提高“1605”农药的防蚜效果,降低农药投资,促进棉花增产。我们于1978～1980年,先后在平昌县白衣先锋等大队反复进行了“两尿”增效防治棉蚜试验。并在全县大面积推广,对降低成本,提高棉花产量和质量都收到了显著效果。 Long-term use of “1605” and other organophosphorus pesticides, cotton aphid had drug resistance, prevention and control decreased, and some increase the pesticide concentration required by more than three times, control effect is still not ideal. In order to improve the anti-aphid effect of “1605” pesticides, reduce pesticide investment and increase cotton yield. We from 1978 to 1980, one after another in Pyeongchang Bai Yi Pioneer and other brigades repeated the “two urine” synergistic effect of cotton aphid control. And large-scale promotion in the county, to reduce costs, improve cotton yield and quality have received significant results.