在为制定滇西地区云南松天然优良林分选择方法和标准而确定主要选择因子的时候,经各性状间的表型相关分析,除以评价林分生长力的林木树高年平均生长量作为优良林分的一个主要选择因子外,还选用了反映云南松木材品质优劣的木质纹理扭转这一因素,作为云南松优良林分的另一个主要选择因子。为此,我们在滇西地区作样地调查时,对云南松天然林分,云南松木质纹理扭转状况进行了调查研究。 Based on the phenotypic correlation analysis of the traits and the high average annual growth rate of tree species in order to determine the main selection factors for the establishment of the natural selection method and standard of Pinus yunnanensis in western Yunnan, A main selection factor of good stands, but also chose to reverse the quality of yunnan pine wood texture to reverse this factor, as the yunnan pine another main selection factor. To this end, we carried out a sample survey in western Yunnan, the Pinus yunnanensis stands, Yunnan pine texture changes were investigated.