| 摘要: |
| 【目的】比较黄心楠和桢楠木材构造特征与物理性能的差异，为区分市售黄心楠与桢楠木材提供依据。【方法】利用木材解剖学的方法，研究和分析黄心楠与桢楠（Phoebe zhennan S.Lee et F.N.Wei）的木材宏观微观构造特征，归纳总结各木种识别要点，并对黄心楠和桢楠的物理性能进行比较。【结果】目前市售黄心楠多为木兰科（Magnoliaceae）木莲属（Manglietia）木材和樟科（Lauraceae）楠属（Phoebe）普文楠（Phoebe puwenensis Cheng）木材。在含水率为12%时，桢楠木材的气干密度最大，普文楠木材次之，木莲属木材最小。桢楠的木材尺寸稳定性最佳，木莲属木材次之，普文楠木材的尺寸稳定性最差。【结论】桢楠材性最佳，密度和尺寸稳定性均优于黄心楠木种；市售黄心楠中普文楠的密度高于木莲属木材，但其尺寸稳定性远低于木莲属木材；在加工和使用过程中，普文楠易变形开裂。 |
| 关键词: 黄心楠 桢楠 木材构造 物理性能 尺寸稳定性 |
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| 基金项目:国家“十二五”科技支撑计划项目（2011BAC09B05）；四川省大学生创新性实验计划项目（1510626067） |
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| Comparison of structural characteristics and physical properties of Huangxinnan and Zhennan woods |
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LIAO Xiaoling,NING Liping,TANG Wen,et al
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| Abstract: |
| 【Objective】This study compared the wood construction characteristics and physical performance of Huangxinnan and Phoebe Zhennan to provide basis for the distinction of Huangxinnan and Phoebe zhennan woods in the market.【Method】The wood anatomy method was adopted to study and analyze the macro and micro structural features of Huangxinnan and Zhennan woods and the physical properties were measured and compared.【Result】The Huangxinnan wood in the market was mainly from Manglietia of Magnoliaceae and from Phoebe puwenensis Cheng of Phoebe of Lauraceae.When the moisture content was 12%,the air dry density of Zhennan wood was the highest,followed by Phoebe puwenensis Cheng wood and Manglietia wood.Zhennan wood had the most stable size,followed by Manglietia wood and Phoebe puwenensis Cheng wood.【Conclusion】Zhennan wood had the best quality,both density and size stability were better than Huangxinnan wood.Huangxinnan wood in the market had higher density than that of Manglietia wood,but its size stability was much lower.In the courses of processing and use,Phoebe puwenensis Cheng wood was easy to get distorted and cracked. |
| Key words: Huangxinnan Zhennan wood structure physical properties size stability |
