17年生大花序桉生材性质的研究  

Study on Green Wood Properties of 17-year-old Eucalyptus cloeziana

作　　者：刘鑫 刘衡 汪深洋 潘雅琪 覃汉夫 符韵林[2] LIU Xin;LIU Heng;WANG Shen-yang;PAN Ya-qi;QIN Han-fu;FU Yun-lin(Dongmen Forest Farm of Guangxi Zhuang Autonomous Region,Chongzuo 532108,China;Forestry College,Guangxi University,Nanning 530004,China)

机构地区：[1]广西壮族自治区国有东门林场,广西崇左532108 [2]广西大学林学院,广西南宁530004

出　　处：《江西农业学报》2020年第7期45-49,共5页Acta Agriculturae Jiangxi

基　　金：广西大学科研项目“大花序桉人工林集成技术研究”。

摘　　要：为研究17年生大花序桉的生材性质,采用体积法和质量法分别测定了17年生大花序桉树皮体积率、树皮质量率、心材率、生材密度、基本密度以及含水率等生材指标,结果表明:17年生大花序桉树皮体积百分率以及质量百分率均随树高的增加而增大,平均值分别为21.34%、16.49%;心材率随树高的增加而降低,平均值为37.42%;生材密度自树皮向髓心逐渐降低,南向和北向差别不大,平均值为1.11 g/cm^3;基本密度在树皮位置和中间位置基本一致,髓心位置最低,平均值为0.69 g/cm^3;从树木基部向树梢生材密度和基本密度均变化没有明显规律性,平均值分别为1.11、0.69 g/cm^3;生材含水率自树皮向髓心逐渐降低,自树木基部向树梢也逐渐降低,平均值为56.98%。In order to research the green wood properties of the raw material of the 17-year-old Eucalyptus cloeziana,volumetric and quality methods were used to determine the bark volume percentage,bark mass percentage,heartwood rate,green density,basic density and water content of the 17-year-old Eucalyptus cloeziana.The results showed that the volume percentage and mass percentage of the 17-year-old Eucalyptus cloeziana increased with the increase of tree height.The average values were 21.34%,16.49%,respectively.The heartwood rate decreased with the increase of tree height,and the average value was 37.42%.Raw material density decreased gradually from bark to pith,with a mean oF1.11 g/cm^3.There is little difference between south and north.The basic density was basically the same in the bark position and the middle position,and the pith position was the lowest,with a mean of 0.69 g/cm^3.The density of trees from base to tip of raw materials and the basic density change had no obvious regularity,and the average 1.11 g/cm^3 and 0.69 g/cm^3,respectively.The moisture content of the raw material from the bark to the pulp heart and from the tree base to the treetops decreased gradually,and the average value was 56.98%.

关 键 词：大花序桉 树皮率 心材率 密度 含水率 

分 类 号：S718.5[农业科学—林学]