根部打孔注药防治蛀干害虫是一种行之有效、省工、省时、省钱的技术 ,同时还可有效兼防枝叶害虫 ,对环境无污染 ,灭虫率在 95 %以上。具体方法如下。1　防治时间　要根据各地区蛀干害虫的羽化期和卵期来确定具体防治时间。如在山东、河南、河北、辽宁、天津、北京等省市 ,光肩 Root perforation injection prevention and treatment of stem borer is an effective, labor-saving, time-saving and cost-saving technology, but also effectively prevent foliage pests, the environment pollution-free, pest control rate of 95%. Specific methods are as follows. 1 Control time should be based on the emergence of various regions of pest eruption and egg stage to determine the specific prevention and treatment time. As in Shandong, Henan, Hebei, Liaoning, Tianjin, Beijing and other provinces and cities, shoulder light