大花序桉种源木材纤维特性变异研究  

Study on Variation of Fiber Characteristics of Eucaplyptus cloeziana Provenances

作　　者：杨中宁[1] 项东云[1,2] 陈健波[2] 卢翠香[2] 

机构地区：[1]广西大学林学院,南宁530004 [2]广西林业科学研究院,南宁530002

出　　处：《广西林业科学》2011年第1期8-11,16,共5页Guangxi Forestry Science

基　　金：广西林业科技专项("十五"林科字2002第15号);国家林业公益性行业科研专项(201104003)

摘　　要：通过对6年生大花序桉(Eucaplyptus cloeziana)种源试验林的纤维特性进行研究,从树干方向和径向上分析纤维特性的变异规律,为该树种林木改良,定向培育和木材的合理利用提供理论依据。结果表明:大花序桉种源纤维长度在沿树干高度上相差不大,规律不明显;1.3 m高度纤维长度与长宽比随生长轮呈递增趋势,而腔径比则逐步减小;种源间纤维长度变异极显著,而纤维长宽比、腔径比变异不显著。Fiber characteristics of experimental forest of 6-year-old Eucaplyptus cloeziana provenances were studied.The variation of fiber characteristics was analyzed from the trunk direction and radial direction,in order to supply theoretical basis for tree improvement,directional cultivation and rational lumber utilization.The result showed that：The fiber length of different provenances had no significant difference in height along the trunk direction;the fiber length and length-width ratio at 1.3m height became progressive trend as the growth ring,but the fiber cavity-radian ratio became diminishing trend;the variation of fiber length between different provenances was obvious,while the fiber length-width ratio and cavity-radian ratio was not.

关 键 词：大花序桉 纤维形态 变异 

分 类 号：S792.39[农业科学—林木遗传育种]