梨星毛虫是果树上重要害虫之一。它分布广、为害重,国内各苹果、梨产区均有不同程度地发生,尤其在管理粗放的果园为害更重,有些叶片被害高达82.9%,因而树上一片焦黄。它主要为害苹果和梨树,以幼虫卷食叶片,削弱树势,影响产量。为了探讨新的防治 Pear star caterpillar is one of the important pests on the tree. It is widely distributed and seriously harmed. The domestic apple and pear producing areas all have different degrees of occurrence. Especially in the extensively managed orchards, the damage is even heavier and some of the leaves are as high as 82.9%. As a result, the trees are yellowish. It is mainly harmful to apple and pear trees, larvae feeding leaves, weaken the tree vigor, affecting the yield. In order to explore new prevention and treatment