三倍体毛白杨无性系木材密度分布的方差分析和广义熵表述

The general entropy formulation and variance analysis of wood density for triploid clones of \%Populus tomentosa

该文首次将广义熵的概念用于分析三倍体毛白杨无性系木材密度的分布 ,同时对 7个无性系进行了方差分析 ,然后将两种统计结果进行了比较 ,说明广义熵可以用来表述木材物理量无规则变化性 .方差分析的结果表明 :各无性系在 0 0 5水平上有显著差异 ,可以挑选出木材品质较好的无性系来 .L3,L10 ,L4,L2 ,L1五个系号与对照相比 ,木材基本密度平均值均超过 5 % ,说明三倍体毛白杨的物理性质有显著优势 .木材基本密度平均值最高者为L3系号 (0 40 92 g/cm3) ,最低者为L6系号 (0 386 2 g/cm3) .广义熵概念在讨论三倍体毛白杨木材密度分布时存在着明显的规律性 ,其数值的均匀程度反映了木材密度分布的差异程度 ,这与广义熵的物理意义相符合 ,进一步可以定量的表示这种规律性 .

;The distribution of wood density for triploid clones of \%Populus tomentosa\% Carr. is analyzed in this paper by using the general entropy formulation. At the same time the variance analysis is carried out for 7 clones, and then these two statistics results are compared. The results show the correctness while using the general entropy in research of wood physical properties. The variance analysis shows:different clones have significant differences at α=0.05 level, therefore some better clones can be chosen from this comparison. Comparing with CK, the average values of basic density of L3,L10,L4,L2,L1 are 5% higher. It demonstrates that the physical properties of triploid clones of \%Populus tomentosa\% Carr. are superior than the others. L3 has the highest wood basic density(\{0.409 2\} g/cm\+3) and L6 has the lowest wood basic density(\{0.386 2\} g/cm\+3). By using the concept of general entropy there is an obvious regularity found in the distribution of wood density for triploid clones of \%Populus tomentosa\% Carr. The uniformity of the value of general entropy defines the difference of the distribution of wood density. This is in keeping with the physical meanings of general entropy. In the future researches the regularity will be discussed in quantity.