文献类型：期刊文献

中文题名：格木轻基质容器苗分级研究

英文题名：Classification of Container Seedlings Growing with Light Media for Erythrophleum fordii Oliv.

作者：贾宏炎[1] 赵志刚[2] 蔡道雄[1] 黎明[1] 郭文福[1] 许基煌[1] 曾杰[2]

第一作者：贾宏炎

机构：[1]中国林业科学研究院热带林业实验中心;[2]中国林业科学研究院热带林业研究所

年份：2009

期号：11

起止页码：19-21

中文期刊名：种子

外文期刊名：Seed

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：央级公益性科研院所基本科研业务费专项资金项目"格木种质资源的收集;保存与评价"(项目编号:热林所2007-26)的部分内容

语种：中文

中文关键词：格木;轻基质容器苗;苗木分级;主成分分析;逐步聚类分析

外文关键词：Erythrophleum fordii Oliv; light media container; seedling classification ; principal components analysis ; step-by-step cluster analysis

分类号：S776.249

摘要：应用主成分分析和逐步聚类分析方法研究了格木轻基质容器苗的分级标准,并通过各级苗木的造林效果试验对分级结果进行验证。结果表明,格木苗可分为3级,Ⅰ级苗:苗高(H)≥23cm、地径(D)≥0.41cm,Ⅱ级苗:23cm>H≥19cm、0.41cm>D≥0.36cm,Ⅲ级苗:H<19cm、D<0.36cm;应用不同级别苗木进行造林试验,1年生时Ⅰ、Ⅱ级苗的保存率均在90%以上,而两者间苗高、地径生长量差异显著,Ⅲ级苗的保存率(低于60%)以及生长量极显著低于Ⅰ、Ⅱ级苗,说明格木轻基质容器苗的上述分级标准是合理的。
Classification standard of container seedlings growing with light media for Erythrophleum fordii Oliv. was studied by principal components and step-by-step cluster analysis methods, and its effect was tested by a planting trial. The results showed that the seedlings could be divided into three grades, seedlings with H 〉123 cm and D 〉10.41 cm belong to the first grade,23 cm 〉 H ≥19 cm and 0.41 cm〉 D ≥0.36 cm to second grade ,and H 〈 19 cm and D 〈0.36 cm to the third grade. This was then confirmed by the planting trial. There was no significant difference between seedlings of the first and second grade in survival rate （ more than 90% ） while significant different （ p 〈 0.05 ） in height and diameter growth when one year old, and the survival rate （ below 60% ） and seedling growth of the third grade were remarkably lower than those of the first and second grades. It could thus be concluded that the classification standard was suitable for light media container seedlings of this species.