云南松梢木蠹象 (Pissodessp )主要危害云南松 (Pinusyunnanensis)幼树 ,目前仅在昆明市嵩明县大哨乡海拔 2 2 0 0～ 2 6 0 0m范围内的云南松纯林以及混交林幼林中发生。通过 3年的调查 ,基本掌握了该虫的危害程度及危害特点。调查结果表明 :大哨乡云南松梢木蠹象危害严重时期松林受害面积达 35 1hm2 ,其补充营养株率、枝干受害株率、危害指数分别为 90 5 %、 37 1%、 42 1% ;枝干受害株率和危害指数与该虫补充营养株率之间存在明显相关性。 Pinus yunnanensis (Pissodessp) mainly endangered the saplings of Pinus yunnanensis. At present, only Pinus yunnanensis stands at an altitude of 2200 ~ 2600 m in Dazhao Township, Songming County, Kunming, Occurrence in young forest. Through 3 years of investigation, the basic grasp of the pest of the degree of harm and hazardous characteristics. The results showed that the damaged area of ​​Pinus yunnanensis was 351hm2 in the serious damage period, the rate of supplementary vegetative plant, the rate of damaged branches and branches, and the hazard index were 90.5%, 37.1% and 42.1% respectively, There was a significant correlation between the plant damage rate and the damage index of the branch and the rate of the supplementary nutrient plant.