邓恩桉种源幼龄材树皮率·心材率和基本密度变异

Bark and Heartwood Percentage and Density of Eucalyptus dunnii

采用质量法、体积法及排水法测定了邓恩桉种源幼龄材树皮率、心材率和基本密度,结果表明:5年生邓恩桉重量树皮率、体积树皮率、心材率、基本密度分别为17.003%、15.139%、16.950%、0.484 g/cm^(3)。3个性状在不同种源间差异不显著。10个种源木材基本密度属于中等密度,满足纤维用材要求。

The bark and heartwood percentages and the dendity of Eucalyptus dunnii were examined.The green volume was tested by drainage method,and bark percentage included bark volume percentage and bark quality percentage.The research showed that the bark percentage,heartwood percentage and density of 5 year old Eucalyptus dunnii were 17.003%,15.139%,16.950%,0.484 g/cm^(3).There was no significant difference in bark percentage,heartwood percentage and density among different provenances.The basic density of wood from 10 provenances is medium density,which meets the requirements of fiber materials.