不同生长环境赤松木材构造的变异

The Wood Structure of Japanese Red Pine under Different Environmental Conditions

研究分析了不同生长环境下天然赤松木材生长轮宽度、晚材率、生长率、管胞长度、管胞长度频率分布、管胞宽度、管胞长宽比等木材构造的变异。结果表明．生长环境优越的林地天然赤松软生长环境差的林地生长速度快。生长轮宽、晚材率低．晚材管胞宽度明显宽、管胞长宽比两者接近。在一定生长轮范围内．管胞长度两者差异显著。

The anatomical property variation of natural Japanese red pine in different environmental conditions was studied. including growth-ring width. late wood percentage. growth rate, tracheid length and frequency distribution. tracheid width and ratio of tracheid length to width. The results are as follows: the natural Japanese red pine in good environmental conditions grows faster than that in bad environmental conditions. The former has wider ring. lower percentage of late wood. much wider tracheid of late wood. and the ratio of tracheid length to width is similar to that of the later. In a certain range of growth ring. there is a significant difference in tracheid length among different environmental conditions.