红铃虫是一种为害棉花的大害虫,不但减少棉花产量,而且降低品质。黄河流域棉区因红铃虫为害损失棉花10％左右,长江流域棉区损失20—30％。因此,消灭红铃虫的为害,实为提高棉花单位面积产量和质量的一个重要环节。消灭红铃虫必须采取越冬期和田间的综合防治措施。过去指导田间药剂活期防治,主要依靠观察老熟幼虫的化蛹羽化和调查青铃的羽化孔,预测各代成虫羽化初期、盛期,以便发动群众进行田间喷药。但是 Red bollworm is a pest infesting cotton, not only to reduce cotton yield, but also to reduce the quality. The loss of cotton in the Yellow River Basin due to pink bollworm is about 10%, while that in the Yangtze River valley is 20-30%. Therefore, the elimination of red bollworm damage, in fact, to improve cotton yield per unit area and quality of an important part. Elimination of red bellworms must take a comprehensive winter and field control measures. In the past, field instruction on the prevention and treatment of pesticides mainly relied on observing the emergence of mature larvae and pupal eclosion, and predicted the early and vigorous emergence of the adult generations in order to mobilize the masses for field spraying. but