有机磷农药1605,曾被群众誉为“一扫光”。原来使用1:6,000—8,000的浓度,杀虫效果仍然良好。现在不少社队反映,用1:2,000的浓度杀虫效果也很差。为了提高1605杀虫效果,我们采用了如下方法:1605原液1斤,加白酒2斤混合成母液。使用时1斤母液对3,000斤水喷雾。据姜岗、枣林等地试验,杀棉红蜘蛛效果58—67%,杀棉蚜效果81—89%;秦岗队试验。杀棉红蜘蛛和棉蚜效果均达90%以上。使用这种方法比直接用 Organophosphorus pesticide 1605, has been praised as “swept the light.” The original use of 1: 6,000-8,000 concentration, insecticidal effect is still good. At present, many communes and communes report that their insecticidal effect is also poor at a concentration of 1: 2,000. In order to improve the insecticidal effect of 1605, we use the following method: 1605 stock solution 1 kg, plus 2 kg of liquor mixed into the mother liquor. Use 1 kg of mother liquor to 3,000 pounds of water spray. According to Jiang Gang, jujube and other tests, kill cotton spider effect 58-67%, kill cotton aphid effect 81-89%; Qin Gang team test. Cotton spider mite and cotton aphid effect reached more than 90%. Use this method than the direct use