摘要
采用大样本调查方法,以预选优株为调查中心,分别连续调查优株所在样地内5年生钟萼木幼树个体树高、地径的生长性状,应用数理统计进行归类分析。结果表明,多年生幼树群体的树高、地径生长表型分化遵循正态分布,利用"t"检验选择法确定优株筛选的选择标准,应用所确定的选择标准筛选速生优株,共筛选优良单株2株,5年生优株与优株所在群体比较,树高和地径分别增长115.8%、82.9%和251.9%、103.7%。
The height and rooting-diameter growth characteristics of the 5-year sapling of Bretschneidera sinensis were investigated respectively in the standard sample spot of elite-trees by large sample method,with the primarily selected dominant trees as investigation center.The height and rooting-diameter growth characteristics were both classified and analyzed by mathematical statistics.The result indicated that the growth phenotypic differentiation of height and rooting-diameter in sapling colony of Bretschneidera sinensis followed the normal distribution,and 2-elite were selected with the selection criterion according to the ＇t＇ determination principle.The height and rooting-diameter growth of those selected 5-year elite sapling increased by over 115.8%、82.9% and 251.9%、103.7% respectively than the average of location colony.
出处
《亚热带植物科学》
2011年第4期38-42,共5页
Subtropical Plant Science
基金
财政部
国家林业局投资项目
关键词
钟萼木
“t”检验选择法
优株筛选
生长特性
Bretschneidera sinensis
＇t＇ determination principle
elite tree selection
growth characteristic
