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研究速生桉不同树龄生材密度及树皮率的变异性,采用排水法测定生材密度,体积法及质量法测定树皮率。结果表明:5 a生、6 a生、7 a生速生按的生材密度分别为1.033、1.037、1.036 g·cm~(-3),不同树龄的速生桉生材密度差异不显著。5 a生、6 a生、7 a生的树皮体积百分率分别为17.56%、16.29%、13.94%,不同树龄的速生桉树皮体积百分率差异显著。5年生、6年生、7年生的树皮质量百分率分别为18.34%、14.57%、11.21%,不同树龄的速生按树皮质量百分率差异显著。
The eucalyptus urophylla density and bark rate variability of different ages were studied. The density of raw material was determined by drainage method. The bark rate was determined by volumetric method and mass method. The results showed that the density of the raw materials of 5 a, 6 a and 7 a was 1.033, 1.037 and 1.036 g · cm -3, respectively. There was no significant difference in the density of Eucalyptus urophylla between different ages. The bark percentages of 5 a, 6 a and 7 a were 17.56%, 16.29% and 13.94%, respectively. The percentages of the volume percentages of fast-growing eucalyptus bark at different ages were significantly different. The bark quality percentages of 5-year-old, 6-year-old and 7-year-old were 18.34%, 14.57% and 11.21%, respectively.