农药的毒杀效果受天气条件影响较大。据试验,多数农药如敌百虫、敌敌畏、乐果、1605、1059、亚胺硫磷、硫磺和石硫合剂、青虫菌、杀螟杆菌等使用时,气温每增高10℃,杀虫效果可增加几倍。但是,气温过高又会促进农药的分解,缩短农药的残效期,降低防治效果。滴滴涕在27—33℃时很少分 Pesticide poisoning effect is greatly affected by the weather conditions. According to the test, the majority of pesticides such as trichlorfon, dichlorvos, dimethoate, 1605,1059, imidacloprid, sulfur and lime sulfur mixture, coccidia, Chibi bacteria and other use, the temperature increased by 10 ℃, insecticidal effect Increase several times. However, the temperature is too high will promote the decomposition of pesticides to shorten the residual effect of pesticides and reduce the control effect. DDT at 27-33 ℃ very few points