论文部分内容阅读
强大小蠹ＤｅｎｄｒｏｃｔｏｎｕｓｖａｌｅｎｓＬｅＣｏｎｔｅ(也称红脂大小蠹 )是一种严重危害松树的大小蠹属的森林害虫。 1 998年首次在我国山西省发现 ,它主要危害我国华北地区的重要造林树种———油松 ,可导致几年生至几十年生的树木在较短的时间内死亡 ,且扩散蔓延迅速
Dendroctonus valens LeConte (also known as Betula pendula) is a pest of the genus Dendroctonus that harms pines seriously. In 1998, it was first discovered in Shanxi Province, China. It mainly endangered Pinus tabulaeformis, an important afforestation tree species in North China. It can cause trees of several years or decades to die within a relatively short period of time and spread rapidly