摘要
对浙江建德新安江林场营造的33年生北美红杉人工林进行了生长适应性研究,同时进行了树干解析、木材密度和心材比例测定。结果表明:北美红杉(组织培养苗)在浙江建德的适应性较强,33年生人工林平均树高逾22m,平均胸径逾36 cm,极显著大于同期种植的杉木砧木嫁接苗人工林和杉木人工林;33年生北美红杉组织培养苗人工林的材积连年生长量与平均生长量尚未交叉,其尚处在较快生长期,其木材密度平均为0.35 g/m3以上,而心材的比例平均为69.0%。说明北美红杉可在浙江建德及类似地区推广应用。
The growth adaptability of Sequoia sempervirens plantation aged 33 was studied at Xin ＇ anjiang Farm of Jiande City,Zhejiang Province,and the wood density,heartwood proportion and stem analysis were determined. The results showed that as for its tissue culture seedling plantation,the average tree height could get more 22 m and the average diameter at breast height could reach more 36 cm,significantly bigger than those of the grafted S. sempervirens plantation with Chinese fir as root stock and Chinese fir plantation planted at the same time. And the volume current annual increment of S.sempervirens tissue culture seedling plantation and its average growth has not yet crossed,still in its faster growing period,with more 0. 35 g / m3 of its average wood density and more 69% of average proportion of heartwood,suggesting that S. sempervirens could be acclimatized to growth around Jiande and other similar areas.
出处
《江苏林业科技》
2016年第5期37-40,共4页
Journal of Jiangsu Forestry Science & Technology
基金
中国林业科学研究院亚热带林业研究所科研项目“优质珍贵树种北美红杉无性系选育研究”(RISFZ-2016-08)
杭州市农业科研攻关项目“北美红杉无性繁殖技术研究”(20150932H39)
关键词
北美红杉
生长适应性
连年生长量
心材比例
木材密度
Sequoia sempervirens
Growth adaptability
Current annual increment
Heartwood proportion
Wood density
