A study to the feature of type and the pattern of activities of the eating-leavesinsect group, which harm to the gardens and elm in Qiqihar, and appropriate measures ofmevention to them.

• 对为害齐齐哈尔国林榆树的食叶害虫类群的种类特征、发生规律进行了研究，并提出了相应的防治措施。