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榆蓝金花虫俗名树虱子,专门蚕食榆树叶。该虫危害严重时,一年长出的几茬叶都被吃光,造成有些树干梢或死亡。过去多采取树冠喷雾、人工扑打等办法防治榆蓝金花虫。但效果都不理想。为了有效地防治榆蓝金花虫,经过几年多方面探讨防治方法,终于试验成功了乐果涂环法。此法简便易行、杀虫率高,药效期长、成本低、环境污染小,并有利于保护天
Ulmus larvae common name tree lice, specifically eroded elm leaves. When the pest is seriously damaging, several stubble leaves that have been grown for one year are eaten, resulting in some tree trunks or death. In the past to take crown spray, artificial swatting and other ways to control elm gold flower insects. But the effect is not ideal. In order to effectively control Ulmus lactiflora, after several years of prevention and treatment methods in various aspects, finally successfully tested the dimethoate ring method. This method is simple, insecticidal rate, long duration, low cost, small environmental pollution, and is conducive to the protection of the day