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采用人工接种、林间调查等方法 ,研究纵坑切梢小蠹蛀梢危害对云南松生长和抗性的影响。结果表明 ,受害梢率在 2 0 .0 %以下时 ,蛀梢危害对云南松的生长和抗性无明显影响。但当受害梢率高于 2 0 .1%后 ,云南松的高、径生长随受害梢率的增加而降低 ,蛀干成功率则随受害梢率的增加而增高。
By artificial inoculation, forest investigation and other methods to study the damage caused by Pinctata obscurus growth and resistance. The results showed that the damage rate of Pinus yunnanensis had no significant effect on the growth and resistance of Pinus yunnanensis when the damage rate was below 2.0%. However, when the shoot rate was higher than 20.1%, the height and diameter of Pinus yunnanensis decreased with the increase of the shoot rate, and the success rate of stem bore increased with the increase of shoot rate.