林业措施控制杨树天牛的研究

林业措施是目前控制杨树天牛灾害的重要方法．通过对不同林分结构抗虫效应的研究发现，宁夏现有的杨树品种在与免疫或高抗树种配置时，受害程度很高；杨树纯林受害程度也很高．只有抗性较强的树种或品种与抗性较弱的树种或品种配置，即树种或品种抗虫性差异显著时， 抗性较强的树种或品种受害程度明显低于抗性较弱的树种或品种．另外通过试验发现人工修枝可以减轻天牛危害

Research of Controlling Poplar Longicorn with Forestry Measures

Now it is an important way to control poplar longicorn with forestry measures. But in the epidemic areas, it was observed that pure poplar forest had low resistance to longicorn, but poplar was significantly less injured in mixed forest with high susceptible species than with resistant trees. Therefore, a certain percentage of susceptible species should be arranged as traps in the plantation. Additionally, artificial pruning of the twigs and branches of the trees can lessen longicorn's damage.