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[目的]通过研究邓恩桉的生长特性和生长应变,为邓恩桉木材利用提供科学数据。[方法]以9.5年生人工林邓恩桉为研究对象,测定和评估树高(Ht)、胸径(DBH)、胸高比(DBH/Ht)、生长应变,并分析生长应变与生长性状的相关性。[结果]邓恩桉树高、胸径和生长应变的小区间差异显著。胸径和生长应变的变化幅度分别为10.2～24.5 cm,-0.227～-0.064 mm。生长应变水平在上坡方向显著高于下坡方向。邓恩桉生长应变与树高、胸径、胸高比无显著相关性。[结论]邓恩桉可作为速生材培育,邓恩桉木材的生长应力不受生长性状的影响。实现高生长和选择低应力水平的速生邓恩桉作为实木加工是可行的。
[Objective] The research aimed to provide scientific data for Dunn’s eucalyptus wood utilization by studying its growth characteristics and growth strain. [Method] With the 9.5-year-old Eucalyptus dunnii as the research object, the height of tree height (Ht), DBH, DBH / Ht and growth strain were measured and evaluated. The correlation between growth strain and growth traits was also analyzed. [Result] The differences between Dunn’s Eucalyptus height, DBH and growth strain were significant. The changes of DBH and growth strain were 10.2 ~ 24.5 cm and -0.227 ~ -0.064 mm, respectively. The strain level of growth was significantly higher in the uphill direction than in the downhill direction. The growth strain of Dunn Eucalyptus did not show significant correlation with tree height, DBH and chest height. [Conclusion] Eucalyptus dunnii could be used as fast growing timber, and the growth stress of Dunn’s eucalyptus wood was not affected by the growth traits. Fast-growing Dunn Eucalyptus, which achieves high growth and low stress levels, is feasible as a wood processing machine.