四种桉树不同种源木材基本密度和纤维长度变异研究  

Variation of Wood Basic Density and Fiber Length of Provenances of Four Eucalyptus Species

作　　者：柴修武[1] 王豁然[2] 方玉霖 王维辉 

机构地区：[1]中国林业科学研究院木材工业研究所 [2]中国林业科学研究院林业研究所 [3]福建省漳州市林业科技推广站

出　　处：《林业科学研究》1993年第4期397-402,共6页Forest Research

基　　金：世界银行贷款;国家造林项目

摘　　要：在福建省长泰县桉树种源试验林内,采集了巨桉、柳桉、赤桉和尾叶桉共45个种源232株5年生桉树试材,进行木材基本密度和纤维长度的试验和研究。结果表明,四种桉树种间和种源间均有一定差异;巨桉、柳桉、赤桉和尾叶桉的基本密度变幅分别为“0.407～0.462、0.427～0.475、0.498～0.541和0.471～0.558g/cm^3;纤维长度变幅分别为799.3～904.5、859.0～937.8、841.4～924.8和847.9～945.5μm。尾叶桉具有最快的生长速度、最大的木材基本密度和较大的纤维长度。种源间,巨桉种源(昆士兰)14431、(巴西)14860、(南非)13365;柳桉种源(新南威尔士)14527、13029、13015;赤桉种源(昆士兰)14106,(西澳)15052和尾叶桉种源(印尼)12895,12898,具有较快的生长速度,较好的木材基本密度及纤维长度,在四种桉树45个种源中为最优种源。Wood basic density and fiber length of 232 5-year-old plants of Eucalyptus (including 45 provenances of Eucalyptus grandis, E. saligna, E. camadulensis and E. urophylla) were tested and analyzed,which were collected from the Eucalyptus Provenance Trial Forest in Changtai County, Fujiaa Province. The results showed that: the variation range of wood basic density of the 4 species of Eucalyptus (E. grandis, E. saligna, E. camadulensis and E. urcphylla) were 0.407~0.462 g/cm3,0.427~0.475 g/cm3,0.498~0.541 g/cm3 and 0.471~0.588 g/cm3 respectively, while that of the fiber length 880.6~ 994.5 um,859.0~937.8 um, 841.4~924.8 um and 847.9~945.5 um respectively. E. urophylla has the fastest growth speed, the biggest wood basic density and longer fiber length. Among the various provenances, Queensland 14431, Brazil 14860 and South Africa 13365 of E. grandis; New Wales 14527, 13029, 13015 of E. saligna; Queensland 14106, 15052 of E. camadulensis; and Indonesia 12895, 12898 of E. urophylla were the better ones, which had the faster growth speed, better wood basic density and fiber length.

关 键 词：桉树 种源 木材 密度 纤维长度 

分 类 号：S792.390.4[农业科学—林木遗传育种]