榆树速生耐旱,适应性强,是“四旁”绿化的重要树种之一。但近年来,由于栽培管理等方面的原因,受榆兰叶甲危害普遍,相伴为害的还有榆牡蛎蚧、光肩星天牛、榆黄叶甲、榆跳象、副脐小蠹、大袋蛾、榆木蠹蛾、榆尺蛾、榆黄足毒蛾、榆透翅蛾等。受害树木往往叶光枝秃,严重影响生长。现介绍几种防治方法,以供参考。一、氧化乐果涂干在榆树干部,选便于操作的高度,刮去宽10～15厘米、深以见韧皮部为度的一圈老皮,将40％氧化乐果与水配成1∶1或1∶2或1∶3倍溶液(浓度愈大效果愈好),用吸附性较好的刷子(或用棉絮等自制)蘸药涂 Elm fast-growing drought tolerance, adaptability, is “all around” one of the important tree species. However, in recent years, due to cultivation and management and other reasons, the damage caused by the common Elm leafhopper, along with the damage are Elm oyster Kuwana, Aconitum celastrus, Ulmus pumila, Ulmus elegans, Vice umbellate moth, moth, , Yu foot moths, Yu Huang foot poison moths, elm through moths and so on. Damaged trees tend to leaf bare branches, seriously affecting the growth. Now introduce several methods of prevention and control for reference. First, the omethoate coated dry elm cadres, select the height for easy operation, scraping wide 10 ~ 15 cm deep to see the phloem for the degree of the circle of old skin, the 40% omethoate and water dubbed 1: 1 Or 1: 2 or 1: 3 times the solution (the greater the effect of the greater the better), with better brush (or homemade cotton dipped) dipped