重视三代棉铃虫防治三代棉铃虫发生期正值棉花大部分伏桃和秋桃蕾的形成和开花期，是形成棉花产量结构的关键阶段。此期棉株对蕾铃受害后的补偿生长能力已极为有限，对棉铃虫危害敏感，如果能有效控制三代棉铃虫对蕾和幼铃的侵害，就可保住７０％以上的棉花产量。为此，防... Emphasis on three generations of cotton bollworm control Occurrence period of three generations of cotton bollworm most of the formation and flowering stage of cotton Vase and autumn peach bud, is the formation of the key stage of cotton yield structure. This cotton plant had very limited ability to compensate for the growth of buds after bollworm injury and was sensitive to the damage to bollworm. If it can effectively control the three generations of cotton bollworm against buds and young bellies, the cotton yield can be kept over 70%. To this end, anti ...