摘要
为了明确桑天牛对毛白杨造成的危害情况，确定防治阈值，在河北省对不同虫口密度、不同树龄的９０株毛白杨进行了解析木调查分析。其结果为：桑天牛影响树木高、径和材积生长，还严重影响木材质量：研究确定了其最低防治阈值；对幼林采取全部种群治理（ＴＰＭ）对策；对成林加强修技（允许少量天牛在树冠枝上存在，但要防止其进入主干）。
In order to find out the damage status of Apriona germari to Populus tomentosa trees, make its control threshold clear, and provide basis for its control, stem analysis was made with 90 poplar trees from of various plantations in Hebei Province. The results showed that the damage of A. germari not only affected the growth, also affected timber quality seriously. And the minimum threshold was made out. As the insect seriously damages the young trees of P. tomentosa, total population management (TPM) was recommended. For grown up plantations, branch trimming should be strengthened, and very few insects were allowed on the tree branches. Meanwhile Integrated Poupulation Management (IPM) was recommended for mature poplar plantations.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1997年第2期78-82,共5页
Journal of Northeast Forestry University
基金
河北省教委重点资助
关键词
桑天牛
毛白杨
防治阈值
Apriona germari
Populus tomentosa
Control threshold
