巧治棉铃虫提起棉铃虫，棉农吃一惊。蚕食蕾花铃、胶落株成空。产卵嫩叶尖、正面多集中。大多产上部，卵粒馒头型。初产乳白色。变黑要出虫。初孵食幼蕾，逐枝钻蕾铃。由上而下害，害后脱落净。一年四五代，三四最严重。‘、一七八月干旱，一可能大发生。加强虫测报。定期... Qiaozhi bollworm lift cotton bollworm, cotton farmers surprised. Nibbled bud flower bell, plastic fall into the sky. Spawning tip of young leaves, positive and more concentrated. Most of the upper production, egg bread type. Prim milk white. Black to be a bug. Early hatching baby buds, branch sticks to drill bell. From top to bottom harm, peel off after the net. Four or five generations a year, the most serious three four. ’17, a drought in August, one may happen. Strengthen pest forecast. regular...