文献类型：期刊文献

中文题名：热带珍贵树种青梅苗木分级研究

英文题名：Seedling Quality Grading of Vatica mangachapoi,A Valuable Tree Species in the Tropics

作者：郭俊杰[1] 尚帅斌[2] 汪奕衡[3,4] 王春胜[1] 陈仁利[1] 赵志刚[1] 曾杰[1]

第一作者：郭俊杰

机构：[1]中国林业科学研究院热带林业研究所;[2]国家林业局西北林业调查规划设计院;[3]中国科学院植物研究所系统与进化植物学国家重点实验室;[4]中国科学院大学

年份：2016

卷号：31

期号：3

起止页码：74-78

中文期刊名：西北林学院学报

外文期刊名：Journal of Northwest Forestry University

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：林业公益性行业科研专项课题(201204301-2)

语种：中文

中文关键词：苗木分级;相关分析;逐步聚类;平均值±标准差法;造林效果

外文关键词：seedling grading; correlation analysis; gradual cluster analysis; mean ±standard deviation method; planting effectiveness

分类号：S723.4

摘要：为评价青梅苗木质量,应用相关分析确定苗高和地径作为青梅苗木分级指标,采用逐步聚类和平均值(M)±标准差(SD)法探究青梅苗木分级标准,比较分析2种方法各级别苗木的造林效果,从而确定适宜的分级方法和分级标准。结果表明,采用地径(D)、苗高(H)作为2年生青梅苗木分级指标是可行的;从各级别苗木比率以及造林效果分析,青梅苗木适宜采用平均值±标准差法进行苗木分级,其分级标准为Ⅰ级苗H≥45.3cm,D≥4.7mm;Ⅱ级苗21.8cm≤H<45.3cm,3.3mm≤D<4.7mm;Ⅲ级苗H<21.8cm,D<3.3mm。
In order to evaluate the quality of Vatica mangachapoi seedlings,seedling height and root collar diameter were screened out as indexes for seedling grading by correlation analysis,and seedling grading standards were studied by gradual clustering analysis and mean±standard deviation methods,and planting effectiveness were compared for seedlings graded by both methods,thus suitable grading method and standard were determined.The results showed that it was practicable to use root collar diameter and seedling height as indexes for grading of two-year-old V.mangachapoi seedling;mean±standard deviation method was better than gradual clustering analysis and was more feasible for seedling grading of this species at aspects of seedling ratio of all sorts of grades and planting effectiveness;and grading standard was as follows：seedlings with height no less than 45.3cm and root collar diameter above 4.7cm were classified as the first grade,those with height less than 45.3cm and above 21.8cm,and root collar diameter lower than4.7mm and above 3.3mm belonged to the second grade,and those with height lower than 21.8cm and root collar diameter below 3.3mm to the third grade.