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果树和其它经济林木的蛀干害虫,如天牛、木蠹蛾、豹蠹蛾、透翅蛾等,它们的幼虫潜身枝、干内部蛀食,开始时不为人们注意,待发现其危害时已造成损失,它对果树生产和林木经营是一大威胁。据一般管理水平的果园调查,虫株率达70％以上,其中被害致死的果树约15％,由于蛀干害虫危害需要锯掉一部分枝条,因而减产的约15％左右。由此可见蛀干害虫所造成的损失是惊人的。要夺回这部分损失,就必须重视蛀干害虫的防治。现将行之有效的方法介绍于下:
Drilling pests of fruit trees and other economic trees such as Bulls, Cydia pomonella, Cydia pomonella, Pest moth and so on, their larvae submarine branches, dry interior eaten, at the out without attention, pending the discovery of its harm When it has caused losses, it is a major threat to fruit tree production and forest management. According to the general management level of the orchards survey, the rate of insect pests reached more than 70%, of which about 15% of the deadly fruit trees were killed and about 15% was cut due to the need to saw off some of the branches due to the damage caused by the stem pests. This shows that the damage caused by stem borers is staggering. To regain this part of the loss, we must pay attention to the prevention and treatment of pests. Now the effective method introduced in the following: