华山松木蠹象为害特性的初步研究

经对华山松木蠹象历时２年的调查和试验研究，初步了解了华山松木蠹象的分布、寄主域、为害特性、为害方式及为害部位。结果表明：该虫在滇东北、滇南、滇中及滇西地区均有分布；其寄主主要是松科的多种树种，该虫具有为害致死速度快，扩散蔓延速度快，只为害健康植株，成虫羽化历期长，防治难度大的特点。本项研究为制定一套经济有效的华山松木蠹象综合防治措施打下了基础。

Preliminary Study on Harm Characteristics of Pissodes sp.

The results of 2 years' investigation and research on host range, harm characteristics, way of harm and harm position of Pissodes sp. indicated as following aspects: (1)Pissodes sp.distributed in southeast, south, west and central section of Yunnan province, the host tree were most species of Pinaceae. (2)The speed of harm, lethal and spread was fast, it only harmed healthy trees, the emergence of adults lasted a long time and it was difficult to control. This research provided a basis for working out a set of economical and effective measures to control Pissodes sp.