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通过对 90株 30年生长白落叶松材性变异及早期预测的研究结果表明 :基本密度和管胞长度的变异在 10龄时趋于稳定 ,此时基本密度的幼——熟龄相关也达显著水平 ,选择效率处于分布的峰顶。所以 ,10龄被确定为基本密度的最佳选择年龄。管胞长度幼——熟龄相关不稳定。
The results of the study on woody variability and early prediction of 90-year-old white-growth Larix olgensis showed that the variation of basic density and tracheid length tended to be stable at 10-year-old, Level, the choice of efficiency in the distribution of the peak. Therefore, the 10th instar was identified as the best choice of the basic density of the age. Tracheid length of young - age-related instability.