长江中下游滩地和低丘陵地水杉木材性质的研究  

The Wood Anatomical and Physical Properties of Metasequoia Glyptostroboides

作　　者：江泽慧[1] 费本华[1] 王朝辉[1] 

机构地区：[1]安徽农业大学林学系

出　　处：《安徽农业大学学报》1994年第S1期15-19,共5页Journal of Anhui Agricultural University

摘　　要：通过对水杉木材解剖性质、物理性质等的研究，结果表明：水杉木材管胞长度３．５６５ｍｍ、管胞宽度３６．８４μｍ、单壁厚７．７１ｕｍ、长宽比９６．６、壁腔比０．７６、柔性系数０．５８、次生壁Ｓ２层微纤丝角１６．６７°、基本密度０．２７５ｇ／ｃｍ３、１７年生平均年轮宽度５．８ｍｍ、晚材率１５．５２％。自髓心向外，木材管胞长度、宽度、胞壁厚、柔性系数、长宽比呈递增趋势，壁腔比和微纤丝角呈递减趋势，木材基本密度开始减小，约８年后开始上升。水杉可作为长江中下游低丘陵和滩地的重要发展树种，木材可作为造纸原料。The wood anatomical and pbysical properties of Metasequoia glyptostroboides Hu et Cheng werereported in this paper.ItS tracheid length was 3.565mm,tracheid width was 36.84μm,one of cellwall thickness was 7.7lμm,length-width ratio was 96.6,cell wall-lumina ratio was 0.76,flex-ible coefficient was 0.58,mrerofibrillar atigle within the S2 layer of secondary wall was 16.67°,ba-sic density was 0.275g/cm3.Within 17 years,its average year width was 5.8mm,latewood ratiowas 15.52%.The tracheid length,width,cell wall thickness,flexible coefficieint of the wood in-creased gradually from pitl to bark.meanwhilc length-width,microfibrillar angle decreased.Thebasic density decreased early,then increased slowly after 8 years old.It follows that,timber of thespecies is good materials for paper making.It can be reforested on beach land along Yantze Riverand low hill lands as well.

关 键 词：水杉 木杉性质 材性变异 

分 类 号：S791.27[农业科学—林木遗传育种]