凉山州纵坑切梢小蠹虫发生情况及防治对策研究

凉山州有18.6万hm2的飞播林区均为云南松纯林，近些年受到纵坑切梢小蠹的严重危害，对该地区纵坑切梢小蠹的发生危害情况进行了系统的调查研究，发现该虫在凉山州发生面积为5.1万hm2，其中重度发生0.51万hm2，中度发生1.88万hm2，轻度发生2.71万hm2，遍布凉山州飞播林的主要林区，并且以很快的速度扩散蔓延；为此，在原有的防治经验的基础上，结合凉山州的实际情况提出了具有针对性的综合治理措施。

Studies on the Occurrence Situation of Tomicus piniperda L. and It's Preventive Measures in Liangshan Prefecture

There are 186,000 hectares of plane broadcasting forest that are all pure Yunnan Pines in Liangshan. They are seriously harmed by Tomicus piniperda L. in recent years. This paper presented a systematic investigation into the occurrence and the harming effects of Tomicus piniperda L. We found that the occurring area of this insect in Liangshan reached 51,000 hectares, among which 5,100 hectares were heavily harmed, 18,800 hectares were harmed on a medium level and 27,100 hectares were slightly harmed. The infection of this insect can be found throughout the whole plane broadcasting area in Liangshan and is rapidly spreading. In light of this situation and the reality of Liangshan Prefecture, and based on the past experience in the prevention of this insect, we correspondingly offered some comprehensive preventive measures.