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2000年5月至2001年5月,研究了云南切梢小蠹与横坑切梢小蠹蛀梢期的种间竞争,比较了2种松小蠹在其寄主云南松树冠的垂直分布规律。结果表明,不同月份2种松小蠹在云南松树冠的垂直分布的存在差异,并随着月份的变动而发生变化。横坑切梢小蠹多危害较细的松梢,而云南切梢小蠹多危害较粗大的松梢。2种松小蠹的其它蛀梢习性(危害梢的年龄、攻击部位、蛀道长度等)文中也进行了比较。结论,云南切梢小蠹对云南松树梢的攻击能力强于横坑切梢小蠹。
From May 2000 to May 2001, the interspecific competitions between Pinus yunnanensis and Pinctada fulvus were studied, and the vertical distribution of Pinus yunnanensis canopy in two hosts was compared. The results showed that there were differences in the vertical distribution of Pinus yunnanensis in two months in different months and changed with the changes of the months. Hypothalamus Hypophthalmus endangered the more delicate pine shoots, while the Pinus yunnanensis more harm to the coarser pine shoots. The other species of Pinctada moths were also compared in this paper by their age, attack site, tunnel length and so on. In conclusion, the attacking ability of Pinus yunnanensis to P. yunnanensis tip is stronger than that of P. yunnanensis.