邓恩桉生长特性与生长应变研究  

Growth Characteristics and Growth Strain of Eucalyptus dunnii

作　　者：叶露[1,2] J.Doland Nichols Carolyn A.Raymond Kevin Glencross 

机构地区：[1]广西林业科学研究院,广西南宁530002 [2]澳大利亚南十字星大学,Military,Rd.Lismore,NSW,2480,Australia

出　　处：《安徽农业科学》2013年第10期4409-4410,4418,共3页Journal of Anhui Agricultural Sciences

基　　金：广西林科院基本业务费项目(林科201103)

摘　　要：[目的]通过研究邓恩桉的生长特性和生长应变,为邓恩桉木材利用提供科学数据。[方法]以9.5年生人工林邓恩桉为研究对象,测定和评估树高(Ht)、胸径(DBH)、胸高比(DBH/Ht)、生长应变,并分析生长应变与生长性状的相关性。[结果]邓恩桉树高、胸径和生长应变的小区间差异显著。胸径和生长应变的变化幅度分别为10.2～24.5 cm,-0.227～-0.064 mm。生长应变水平在上坡方向显著高于下坡方向。邓恩桉生长应变与树高、胸径、胸高比无显著相关性。[结论]邓恩桉可作为速生材培育,邓恩桉木材的生长应力不受生长性状的影响。实现高生长和选择低应力水平的速生邓恩桉作为实木加工是可行的。[Objective] The aim was to provide the scientific data for utilization of E.dunnii wood through investigating its growth and growth strain.[Method] With 9.5-year-old E.dunnii plantation as study object,tree height(Ht),diameter at breast height(DBH),ratio of diameter to tree height(DBH/Ht),growth strain and their correlations were estimated and analyzed.[Result] There were significant differences in Ht,DBH and growth strain between plots.DBH and growth strain were in the range of 10.2-24.5 cm,-0.227——0.064 mm,respectively.Uphill growth strain was significantly greater than the downhill growth strain.Growth strain had no significant correlations with Ht,DBH or DBH/Ht ratio in E.dunnii.[Conclusion] E.dunnii was a potentially fast-growing species.It was feasible to obtain fast-growing E.dunnii trees with low level of growth strain as the strain was not affected by its growth.

关 键 词：邓恩桉 生长应变 生长性状 

分 类 号：S792.89[农业科学—林木遗传育种]