对危害桃、梨、柑桔等果树的蚜虫、蚧壳虫、卷叶虫等害虫,采用喷粉、喷雾等方法防治,常因树体高大,漏喷漏治的死角多,防效不理想。特别是庭院果树,喷粉、喷雾还易污染环境。而利用具内吸性的40%乐果乳油或40%氧化乐果乳油、25%杀虫双水剂、50%辛硫磷乳剂,按1:3～6对水稀释,用打针形式,把药液注入树体,药剂通过树体吸收输导,残效期10～15天,防治效果可达95%以上,此法使用简便,效果很好。 Insects such as aphids, scale insects and leaf roller worms that jeopardize fruit trees such as peaches, pears and oranges are treated and controlled by dusting and spraying methods. . Especially in the garden fruit trees, dusting, spraying is also easy to pollute the environment. The use of 40% dimethoate EC or 40% omethoate, 25% insecticide Shuangshui, 50% phoxim emulsion, according to 1: 3 ~ 6 diluted with water, with the injection form, the The medicinal solution is injected into the tree body, the medicament is absorbed and guided by the tree body, the residual period is 10 to 15 days, and the prevention and cure effect can reach more than 95%. The method is simple to use and has good effect.