果树树干,特别是老树干,常受天牛幼虫危害,造成果树生长不良,产量下降,重者还会导致果树不结果或死亡。笔者经过实践,发现用卫生球灭天牛不失为简单易行的妙方。 Fruit tree trunks, especially the old tree trunk, are often endangered by the larvae of the cerambycids, resulting in poor growth of the fruit trees and a decrease in yield. In severe cases, the fruit trees can not result or die. After the practice of the author, I discovered that using the ball of health off the beetle after all, is a simple recipe.