摘要
以15个桉树(Eucalyptus spp.)无性系为研究对象,调查2.5、3.5、4.5年生无性系试验林的胸径和树高,研究其生长性状。结果表明,历年胸径、树高和单株材积在无性系间存在极显著差异。根据4.5年生的生长量分析,基于Q型聚类初步筛选出6号、8号和14号等3个优良无性系,它们的生长量均达到甚至高于对照的生长量。本研究可为该地区无性系进一步选育和应用提供依据。
15 Eucalyptus clones were selected as the research objects. The DBH and tree height of the 2.5-year-old, 3.5-year-old and 4.5-year-old were investigated to study their growth characteristics. Results showed that there were extremely significant differences in DBH,tree height and individual volume over the years. According to the growth analysis of 4.5-year-old,such three superior clones as No.6,No.8 and No.14 were preliminarily selected based on Q-type clustering,and the growth of the three clones could reach or even exceed the growth of the control,which provided the basis for further breeding and application of clones in Nannning area.
引文
[1]祁述雄.中国桉树[M].北京:中国林业出版社,2002.
[2]中国林学会.桉树科学发展问题调研报告[M].北京:中国林业出版社,2016.
[3]伍荣善,韦颖文,吴幼媚,等.桉树无性系在桂南地区生长对比[J].广西林业科学,2011,40(2):136-139.
[4]傅淼,覃贵才,兰俊,等.东门杂交桉无性系对比试验研究[J].桉树科技,2012,29(4):29-35.
[5]黎怀玲,付朝阳,廖仁雅,等. 6年生杂交桉无性系对比试验[J].广西林业科学,2016,45(2):195-198.
[6]岑巨延.广西桉树人工林二元立木材积动态模型研究[J].华南农业大学学报,2007,28(1):91-95.
[7]叶露,陈健波,项东云,等.大花序桉种源/家系试验的早期研究[J].广西林业科学,2007,36(4):187-191.
[8]项东云,兰保国.广西桉树无性系选育与栽培调查[J].广西林业科学,1997,26(4):170-178.
[9]莫晓勇,彭仕尧,龙腾,等.雷州半岛桉树无性系选择及其早期综合评价[J].林业科学研究院,2003,16(3):293-298.