大花序桉解析木统计数据

以大花序桉（Eucalyptus cloeziana）两个 18 年生家系（家系 1：C4119、家系 2：C4080）木材为材料开展解析木分析，先选健壮无病虫害标准木分段截取圆盘，除测生长与物理指标外，重点观察心材边材界限、测定心材比例与形成速率，对比家系间心材发育差异，旨在研究其心材形成规律和机理，为优良家系筛选与培育提供依据。

Wood samples were collected from two 18-year-old families (Family 1: C4119, Family 2: C4080) of Eucalyptus cloeziana for stem analysis. First, healthy, pest-free standard sample trees were selected, and wood disks were cut segmentally. In addition to measuring growth and physical traits, this study focused on observing the boundary between heartwood and sapwood, quantifying the heartwood proportion and formation rate, and comparing the differences in heartwood development between the two families. The research aims to reveal the patterns and mechanisms of heartwood formation, providing a scientific basis for the selection and breeding of superior eucalyptus families.