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簸箕柳材性性状株内纵向变异的趋势分析

DOI: 10.3969/j.issn.1000-2006.2014.05.029, PP. 149-152

Keywords: 簸箕柳,木材基本密度,纤维素,半纤维素,木质素,纵向变异

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Abstract:

以簸箕柳为对象,对其木材基本密度,木材纤维素、半纤维素及木质素含量在树干不同高度上的变化趋势进行了研究。结果表明:6株样本木材的基本密度为0.3312~0.3854g/cm3,且在个体内都呈现随着树干高度的增加逐渐降低的趋势;样本木材的纤维素、木质素及半纤维素含量的变化范围分别为48.69%~56.89%、12.58%~16.42%、19.83%~23.76%,纤维素含量及半纤维素含量在不同个体内由根部到梢部均逐渐降低,木质素含量则表现出两头高、中间低的趋势,并且最高值出现在梢部。方差分析表明,尽管不同个体间木材化学成分含量和基本密度都存在显著差异(达1%极显著性水平),但这些性状在不同植株内沿树干高度的变异均未达显著水平。

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