棉铃虫又名菸螟蛉,俗名青虫,在北方棉区尚少注意。年来为害渐趋扩大,棉花蕾铃被害之後脱落现象极为严重,局部严重地区仅因此虫为害脱落率即达百分之五十以上,药剂防治办法尚不很成熟,人工捕捉经验也感缺乏,—般任其为害,致使产量遭 Cotton bollworm, also known as tobacco stem borer, the common name caterpillar, pay little attention in the northern cotton area. The damage gradually increased in recent years. The phenomenon of cotton buds falling off after being severely damaged is extremely serious. In some serious areas, the pest-killing rate is only above 50%. The methods for controlling pesticides are not yet mature and the experience of manual catches is also lacking. As its own harm, resulting in production was