越冬期防治棉花害虫措施天津市种子管理站张存信越冬期，一般是棉花害虫潜伏阶段，也是它生活周期中最薄弱的环节，最容易歼灭。所以，搞好越冬期棉花害虫防治，是压低虫口基数，消灭害虫于为害之前的最有利时机，也是抓好预防为主的重要阶段。其主要措施是：１．清洁棉田... Measures to prevent and control cotton pests during wintering period Tianjin Seed Management Station Zhang Cunxin Overwintering period is generally the latent phase of cotton pests and also the weakest link in its life cycle, easiest to annihilate. Therefore, to do a good job during the winter cotton pest control is to depress the insect population base to eliminate pests before the most favorable opportunity, but also grasp the prevention of an important stage. The main measures are: 1. Clean cotton fields ...