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杨干隐喙象(Cryptorrhynchus lapathiL.),异名杨干象,杨干白尾象鼻虫,在宝鸡市分布较广,为害严重。幼虫蛀食韧皮部和木质部,使树木逐渐干枯死亡;成虫啃食1、2年生嫩枝,对木材质量和林木生长影响很大。七十年代前很多学者对该虫的分布、寄主、防治等曾做过不少研究,但提出的药剂防治方法、效果均不够理想。为了探索有效的防治方法,以便推广应用,我们从1980年开始,与凤县、宝鸡及太白县林业站协作,结合病虫普查,在宝鸡市范围内进行
Cryptorrhynchus lapathiL., The alias Yang Ganxiang, Yang dry white-tailed weevil, in the broader distribution of Baoji, serious damage. The larvae erode the phloem and xylem, causing the trees to gradually die and die. The adults bite the 1 and 2 year old shoots, which have a great influence on the wood quality and the growth of trees. Many scholars before the seventies had done many researches on the distribution, host, prevention and control of the insects, but the proposed methods and effects of medicament prevention were not satisfactory. In order to explore effective methods of prevention and control for the promotion and application, we started cooperation with Fengxian, Baoji and Taibai County forestry stations since 1980 to carry out surveys of pests and diseases in the area of Baoji