Pilodyn在桉树活立木材性质评估中的应用

测定了建立在广西22个4年生桉树无性系的Pilodyn值、木材基本密度、边材木材密度、心材木材密度和弹性模量。结果表明：Pilodyn值为9．44—15．41mm、木材密度为0．3514-0．4913g·cm^-3、弹性模量在3．94GPa到7．53GPa之间；Pilodyn值在不同处理、不同方向及不同参试无性系间均存在极显著差异。Pilodyn值与各材性指标间的相关系数在-0．433到-0．755之间，呈显著到极显著负相关。研究表明，Pilodyn方法可以预测桉树活立木的木材密度和弹性模量。

Use of the pilodyn for assessing wood properties in standing trees of <Emphasis Type="Italic">Eucalyptus</Emphasis> clones

The effectiveness of pilodyn was tested in evaluating wood basic density, outer wood density, heartwood density, and modulus of elasticity (MoE) at 22 four-year-old eucalyptus clones in Guangxi, China. Results indicated that the mean value ranged from 9.44 to 15.41 mm for Pilodyn penetration, 0.3514 to 0.4913 g·cm^?3 for wood basic density, and 3.94 to 7.53 Giga Pascal (GPa) for MoE, respectively. There were significant differences (1% level) in pilodyn penetration between different treatments, different directions and among the clones. Generally strongly negative correlations were found between pilodyn penetration and wood properties, and the coefficients ranged from ?0.433 to ?0.755. Our results, together with other studies, suggest that the use of pilodyn for assessing wood density and MoE was confirmed as a possibility.