滴心施药防治棉铃虫通许县棉办张乃安，郭翠英农药滴心防治棉铃虫，是一种经济有效的好办法，不仅杀伤了害虫，减少投资，而且保护了天敌。怎样才能提高滴心防治棉铃虫药效呢？要掌握以下五个关键。第一、掌握虫情。棉铃虫发生期，经常深入棉田调查，掌握虫情，这是搞好滴... Drops of heart pesticide application control bollworm Tongxu County Cotton Office Zhang Nai An, Guo Cuiying Pest control bollworm pesticides, is a cost-effective and good way not only to kill pests, reduce investment, but also to protect the natural enemies. How to improve the efficacy of bollworm prevention bollworm? To grasp the following five key. First, to master the worm. The occurrence of cotton bollworm, often in-depth investigation of cotton fields, grasps the worm, which is a good drop ...