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1、中国林学会木材科学分会第十次学术研讨会论文集人工林米老排木材解剖性质及其变异性研究梁善庆1罗建举2傅峰1（1中国林业科学研究院木材工业研究所，北京100091；2广西大学林学院，南宁530005）摘要：本文对人工林米老排木材解剖性质及其变异规律进行了系统的测定和分析，结果表明：（1）纤维长度、宽度、双壁厚、长宽比、壁腔比、腔径比平均值分别为2014.2µm、26.19µm、11.07µm、78.68、0.79、0.57；由髓心向外除腔径比呈递减趋势外其余纤维形态指标呈递增趋势。（2）导管分子长度、宽度、双壁厚、长宽比、壁腔比、腔径比平均值分别为1666.0µm、53.8
2、3µm、5.44µm、31.85、0.12、0.90；由髓心向外除双壁厚和壁腔比呈递减趋势外其余导管分子形态指标呈递增趋势。（3）纤维比量、导管比量、木射线比量和薄壁组织比量平均值分别为54.8%、16.5%、27.6%、1.1%；由髓心向外木纤维比量呈增加趋势，导管分子比量呈递减趋势，木射线比量和薄壁组织比量变异规律不明显。（4）微纤丝角平均值为8.4°，由髓心向外呈递减趋势（5）幼龄材与成熟材的界限为第7年。关键词：人工林米老排解剖性质变异规律StudyontheWoodAnatomicalPropertiesandtheirVariationsofMytilari
3、alaosensisPlantationLIANGShan-qing1,LUOJian-ju2,FU-Feng1(1ResearchInstituteofWoodIndustry,ChineseAcademyofForestry,Beijing100091;2ForestrycollegeofGuangxiUniversity,Nanning530005)Abstract:Inthispaper,Mytilarialaosensisplantationweresystematicstudiedonthewoodanatomicalpropertiesandtheirva
4、riationpatterns.Theresearchresultswereasfollows:(1)Theaverageoffiberlength,fiberwidth,fiberwallthickness,ratiooflengthtowidth,ratioofthicknesstocavityandratioofcavitytowidthwererespectively2014.2µm,26.19µm,11.07µm,78.68,0.79,0.57.Frompithtobark,theradialvariationpatternsofallfibermorphol
5、ogicalparametersweregraduallyincreasing,exceptfortheratioofcavitytowidthwasgraduallydecreasing.(2)Theaverageofvesselelementlength,vesselwidth,vesselwallthickness,ratiooflengthtowidth,ratioofthicknesstodiameterandratioofcavitytowidthwererespectively1666.0µm,53.83µm,5.44µm,31.85,0.12,0.90.
6、Frompithtobark,theradialvariationpatternsofvesselmorphologicalparametersweregraduallyincreasing,exceptforvesselwallthicknessandratioofthicknesstocavityweregraduallydecreasing.(3)Theaverageproportionoffibertissues，proportionofvesseltissues，proportionofwoodraytissuesandproportionoflongitud
7、inalparenchymawererespectively54.8%,16.5%,27.6%,1.1%.Frompithtobark,theradialvariationpatternofproportionoffibertissueswasgraduallyincreasing,theproportionofvesseltissueswasgraduallydecreasing,butthevariationpatternsfortheproportionofwoodraytissuesandproportionoflongitudi
