6年生黑木相思木材的生材性质研究  

Green wood properties for 6-year-old Acacia melanoxylon

作　　者：覃梅 韦柳明 邓永胜 陈松武 刘晓玲[2] Qin Mei;Wei Liuming;Deng Yongsheng;Chen Songwu;Liu Xiaoling(Guangxi State-owned Liuwan Forest Farm,Yulin 537000,China;Guangxi Forestry Research Institute/Guangxi Quality Control of Wood Resources Cultivation Research Center of Engineering Technology,Nanning 530002,China)

机构地区：[1]广西壮族自治区国有六万林场,广西玉林537000 [2]广西壮族自治区林业科学研究院/广西木材资源培育质量控制工程技术研究中心,广西南宁530002

出　　处：《江苏林业科技》2024年第3期5-9,共5页Journal of Jiangsu Forestry Science & Technology

基　　金：广西壮族自治区林业科技项目“黑木相思木材材性分析及材质评价研究”(2023GXZCLK22);广西壮族自治区林业科学研究院研究团队专项“广西主要用材树种木材加工利用适应性及品质评价研究”(2024RT15);广西壮族自治区林业科技推广示范项目“广西主要用材树种木材材性分析及材性数据库构建”(2023GXLK03)。

摘　　要：以6年生黑木相思为研究对象,对其木材的生材性质进行分析,为人工林黑木相思木材的合理利用提供参考。通过排水法、质量法及数值法对黑木相思的树皮率、心材率、生材含水率及木材密度进行测定,结果表明:黑木相思树皮体积分数、树皮质量分数、心材率、生材含水率、生材密度和基本密度平均值分别为15.94%,17.06%,49.53%,77.70%,0.773,0.437 g/cm3。自树干基部向上,黑木相思的树皮体积分数、树皮质量分数、基本密度总体上均呈波动性增加的趋势,心材率总体上均呈递减的趋势,生材含水率、生材密度总体上呈波动性递减的趋势;自髓心向外,黑木相思的生材含水率均逐渐降低,生材密度南北向上均呈先平稳后下降的趋势,基本密度在南北向上的变化规律有所差别,在北向上呈先下降后增加的趋势,在南向上呈逐渐增加的趋势。In order to provide a reference basis for the rational utilisation of Acacia melanoxylon in plantation forests,the green wood properties were analysed.Bark volume,heartwood percentage,moisture content of green wood and wood density were determined by drainage method,mass method and numerical method.The research showed that:The average values of bark volume fraction,bark mass fraction,heartwood percentage,moisture content of green wood,green wood density and basic density of 6-year-old A.melanoxylon were 15.94%,17.06%,49.53%,77.70%,0.773 and 0.437 g/cm 3,respectively.With the increase of the tree height,the bark volume fraction,bark mass fraction and basic density showed a fluctuating increasing trend;the heartwood percentage showed a decreasing trend and the moisture content of green wood and green wood density showed a fluctuating decreasing trend.From pith to sapwood,the moisture content of green wood gradually decreased,and the green wood density showed a steady and then decreasing trend,the results were consistent in the north-south direction.However,the basic density had different patterns of change in the southward and northward directions,with a decreasing and then increasing trend in the northward direction and a gradual increasing trend in the southward direction.

关 键 词：黑木相思 树皮率 心材率 生材含水率 木材密度 

分 类 号：S781.8[农业科学—木材科学与技术] S792.99[农业科学—林学]