桃树桑盾蚧的药效试验桃树桑盾蚧在我区的桃树上危害甚重，果农们由于没有掌握防治方法，导致近几年桃树上盖满厚厚的一层蜡粉．轻者生长不良，重者整枝、整株枯死，造成毁灭性减二：产。我们针对这一问题，对桃桑盾蚧的发生规律进行了观察，并作了几种农药的药效试验，防... Peach Sangnong Kuwan efficacy test Peach Sangnong Kuwan harm in our region peach, fruit farmers who did not grasp the prevention and treatment methods, resulting in peach trees in recent years covered with a thick layer of wax. Light poor growth, severe pruning, the whole dead, resulting in devastating by two: production. In response to this problem, we observed the occurrence of peach Sanguinea pest, and made several trials on the efficacy of pesticides.