Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.
林龄单因变量的蓄积量生长模型决定系数低，引入地位指数和密度指数再次参数化的生长模型可显著提高模型拟合度。
Quantity genetic analysis showed that genetic variation coefficient, performative variation coefficient and hereditary ability of growth properties were greater than physiological properties.
数量遗传分析表明，各生长指标的遗传变异系数、表型变异系数和广义遗传力一般均大于生理指标；
Although the increase of wind speed can lead to the accretion of the collision coefficient, but the effect is not large, relatively slow growth of the collision factor.
风速的增大虽然能导致绝缘子表面碰撞系数的增大，但影响不是很大，碰撞系数增长较缓慢。
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