吸果夜蛾是为害成熟果实的主要害虫之一,各地果园均有不同程度发生,尤以山、野果为重。悬挂卫生球可以驱避吸果夜蛾的危害,方法是:将一枚卫生球包上一层纱布,然后挂在树上的适当部位,一棵树的悬挂数量视树体大小而定。一般4～6龄树在树体中部悬挂1枚即可;20龄以上大树可 The fruit-bearing worm is one of the major pests that damage the mature fruits. The orchards all have different degrees of occurrence, especially in the mountains and wild fruits. Hanging health balls can get rid of the harmful effects of Asiatic moths by putting a sanitary ball on a layer of gauze and hanging on the appropriate parts of the tree. The number of hanging trees depends on the size of the tree. Generally 4 to 6 trees in the middle of the tree hanging a can; 20 trees can be over