1981年,我们在黄潭公社新华大队和小庙公社农科所,用杀灭菊酯进行棉红铃虫防治试验。其方法和效果是:以20％杀灭菊酯2,000倍液,于6月下旬一代红铃虫盛卵期及7月下旬二代红铃虫盛卵期喷药,7天喷一次,连喷三次;8月下旬三代红铃虫盛卵期喷药,7天喷一次,连喷两次,每亩每次喷药液200—250斤,平均防效 In 1981, we were in the Huangtan commune Xinhua Brigade and Temple Temple Agricultural Research Institute, with fenvalerate cotton bollworm prevention and control trials. The method and the effect are as follows: spraying 2,000 times of 20% fenvalerate, spraying the spleen of the second generation pink bollworm in the late June and spraying the spleen of the second generation pink bellflower in the seventh month of July, Three times; in August the third generation of pink bollworm eggs Sheng Sheng, 7 days spray once, and even spray twice per mu spray liquid 200-250 pounds, the average anti-efficacy