邓恩桉木材基本密度与解剖特性的相关性分析  

Relationship of Wood Basic Density and Anatomical Properties of Eucalyptus dunnii

作　　者：卢翠香[1] 周维[1] 刘媛[1] 郭东强[1] 李昌荣[1] 项东云[1] LU Cui-xiang;ZHOU Wei;LIU Yuan;GUO Dong-qiang;LI Chang-rong;XIANG Dong-yun(Guangxi Forestry Research Institute,Keg Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning 530002,China)

机构地区：[1]广西壮族自治区林业科学研究院,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,南宁530002

出　　处：《广西林业科学》2018年第2期126-132,共7页Guangxi Forestry Science

基　　金：广西林业科技项目(桂林科字[2014]第20号;桂林科字[2016]第16号)

摘　　要：为揭示邓恩桉(Eucalyptus dunnii)木材材性变异规律,以广西沙塘林场邓恩桉为研究对象,系统测量了基本密度和解剖特性指标,用数理统计方法,对所测数据进行全面分析和比较。结果表明:基本密度和5个解剖参数的径向变异由髓心向外先迅速递增,而后趋于平缓或降低;年轮宽度除外,其余5个参数在株内径向和株间差异均达到极显著水平(P<0.01);壁腔比除外,其余纤维指标均达到优良造纸用材的要求;幼龄材与成熟材的界限为8~10年;多项式方程能较好地描述基本密度与解剖各项参数和树木年轮的相关关系。In order to reveal the variation regularities of Eucalyptus dunnii,the basic density and anatomical properties indexes of E.dunnii in Guangxi Shatang forest farm have been measured and the data were analyzed and compared by means of mathematical statistics.Results indicated that basic density and 5 radiation varia?tions of anatomical characteristics increased rapidly at first and then gentlely increased or reduced from pinch to outward.The variation of 5 parameters except for growth ring width showed highly significant differences within trees and among trees.The indexes of fiber quality traits but fiber wall-lumen reached requirement for paper making.The boundary line of juvenile wood and mature wood was from 8-year-old to 10-year-old.Poly?nomial equations can be could to describe the relationship between basic density and anatomical parameters as well as tree rings.

关 键 词：邓恩桉 基本密度 解剖特性 株间变异 株内变异 

分 类 号：S792.39[农业科学—林木遗传育种]