| 邓恩桉生材含水率、年轮宽度及木材密度研究 |
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| 引用本文： | 卢翠香,陈健波,刘媛,周维,毛纯,项东云.邓恩桉生材含水率、年轮宽度及木材密度研究[J].桉树科技,2014(2):23-27. |
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| 作者姓名： | 卢翠香 陈健波 刘媛 周维 毛纯 项东云 |
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| 作者单位： | 广西林业科学研究院国家林业局中南速生材繁育实验室广西优良用材林资源培育重点实验室;广西七坡林场; |
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| 基金项目： | 广西优良用材林资源培育重点实验室自主课题(12B0101);广西林业科技项目(桂林科字〔2009〕1号) |
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| 摘 要： | 为了解邓恩桉的木材性质，本研究采用排水法和《GB/T 1930-2009》方法测定邓恩桉的生材含水率、年轮宽度以及木材密度。结果表明：全树生材含水率、年轮宽度、生材密度和基本密度均值分别为114.61%、4.73 mm、1.164 g·cm-3、0.522 g·cm-3。随着树高的增加，年轮宽度、木材密度呈-大-小-大‖趋势，生材含水率呈-小-大-小‖趋势；由髓心向外，木材密度逐渐减小，生材含水率逐渐增大，年轮宽度先增加后减小。4个材性指标在树干径向不同位置间差异极显著，在不同树高间差异不显著（除年轮宽度外）。基本密度与3个材性指标间存在极显著或显著相关。
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| 关 键 词： | 邓恩桉 生材含水率 年轮宽度 木材密度 |
Research on Moisture Content of Green Wood,Annual Ring Width and Wood Density of Eucalyptus dunnii |
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| Institution: | LU Cui-xiang,CHEN Jian-bo,LIU Yuan,ZHOU Wei,MAO Chun,XIANG Dong-yun (1. Guangxi Forestry Research Institute, Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China, Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Nanning 530002, Guangxi, China; 2. Qipo Forest Farm of Guangxi, Nanning 530225, Guangxi, China) |
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| Abstract: | This study investigated the wood properties of Eucalyptus dunnii. Green wood volume was determined by the drainage method and the annual ring width was determined by the GB/T 1930-2009 method so as to study the moisture content, annual ring width and wood density of this species. Averages for moisture content, annual ring width, green density and basic density were 114.6%, 4.7 mm, 1.16 g·cm-3 and 0.52 g·cm-3 respectively. With increasing tree height, the annual ring width, green density and basic density showed a trend of＂big–small–big＂. From pith to sapwood, density gradually decreased and moisture content gradually increased. In contrast, annual ring width increased at first but then decreased. Moisture content, annual ring width, green density and basic density were significantly different between different radial directions but no significant differences were found between stem heights. Basic density showed highly significant correlations with the other wood properties assessed. |
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| Keywords: | Eucalyptus dunnii green wood moisture content annual ring width wood basic density |
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