家榆是我省主要造林树种之一,但易受食叶害虫为害。尤其是榆紫金花虫(又称榆紫叶甲)猖镢发生时,能将家榆树叶吃光。 锦县国营大凌河林场高级工程师周玉石同志,根据榆紫金花虫成虫特性,用锦州南山化工厂生产的无毒粘虫胶涂抹树干防治榆紫金花虫,小面积试验收到了较好的效果。具体做法是:在3月下旬越冬成虫出现之前,往树干上涂抹胶环,高 Elm home is one of the main afforestation species in our province, but vulnerable to leaf pests. In particular, purple elm flower insects (also known as Ulmus violaceus) occurs when rampant, home elm leaves can be eaten. According to the characteristics of Ulmus nigricans adults, the non-toxic sticky gum produced by Jinzhou Nanshan Chemical Factory was used to smear the trunk of Ulmus violaceus and the small-area test received good results . The specific approach is: in late March before the emergence of overwintering adults, to the trunk plaster ring, high