毒签薰蒸法防治果树蛀干害虫光肩星天牛、桑天牛、苹果小吉丁虫、苹果透翅蛾、芳香木蠢蛾等蛀干害虫．此类害虫营隐蔽生活，一般化学防治效果不好，而用毒签熏蒸防治，则是一种比较理想的方法。一、毒签熏蒸杀虫的原理：将毒签插入虫道后，药与树液和虫类的水分接触产生化... Poison sign fumigation method to prevent and control fruit trees bore insects Guang Shijian day beetles, Morus alba, apple jelly worm, apple pest moth, aromatic wood moths and other bore pests. Such pest camp hidden life, the general effect of chemical control is not good, and fumigation control with poison marks, it is a more ideal way. First, the principle of fumigation insecticide fumigation: the poison will be inserted into the worm, the drug and tree liquid and insect water contact produce ...