河北省及北京市区柳树光肩星天牛和桑天牛的调查及防治策略

Investigation Research and Control Strategy on Anoplophora glabripennis and Apriona germari in Willows in the Cities of Hebei Province and Beijing City

[目的]为防治天牛类蛀干害虫对绿化树木的危害提供理论依据。[方法] 在河北省和北京市7个市（县）的15个植柳地点随机调查柳树2 760株。[结果] 在河北省，光肩星天牛危害幼龄柳树的被害率超过22.9%，危害中老龄柳树的被害率达50.8%。各地柳树受桑天牛危害较轻且差别不大，有虫株率为0.74%～7.35%，虫口密度为0.010～0.074头/株。保定栽植2年的4个柳树品种或品系的光肩星天牛有虫株率是桑天牛的9.62倍，虫口密度是桑天牛的45.67倍；在绦柳上光肩星天牛有虫株率是桑天牛的14.03倍，虫口密度是桑天牛的92.61倍；在旱柳上光肩星天牛有虫株率是桑天牛的17.51倍，虫口密度是桑天牛的76.71倍；在馒头柳上光肩星天牛有虫株率是桑天牛的1.20倍，虫口密度是桑天牛的5.36倍。[结论] 对城市园林绿化的植保及钻蛀性害虫的防治具有重要意义。

[ Objective ] The research aimed to provide theoretical foundation for controlling the damage of tern-borer longieornia pests to virescence trees. [ Method] The 2 760 willows in 15 willow-planted locations in 7 cities （counties） of Bejing City and Hebei Province were investigated randomly. [ Result] In Hebei Province, the demage rate of young willows damaged by Anoplophora glabripennis exceeded 22.9% and that of middle-aged and old willows was up to 50.8%. The damage ofApriona germari to willows in various locations was lighter and had little difference, the rate of willow plants with A. germari was 0.74% -7.35% and its larvae density was 0. 010 -0.074 larvae/plant. Among the 4 willow varieties or lines planted for 2 years in Baoding, the rate of willow plants with A. glabripennis was 9.62 times of that of willow plants with A. germari and its larvae density was 45.67 times of that of A. germari; the rate of Salix matsudana plants with A. glabripennis was 14. 03 times of that of S. matsudana plants with A. germari and its larvae density was 92.61 times of that ofA. germari; the rate of Hankow willow plants with A. glabripennis was 17.51 times of that of Hankow willow plants with A. germari and its larvae density was 76.71 times of that of A. germari; the rate of Mantou willow plants with A. glabripennis was 1.20 times of that of Mantou willow plants with A. germari and its larvae density was 5.36 times of that of A. germari. [ Conclusion] The research had important significance in plant protection and controlling boring-insect in urban landscaping.