顶果树人工林优树选择  

Study on Superior Tree Selection of Acrocarpus fraxinifolius Wight ex Arn. Plantation

作　　者：朱昌叁[1] 冯立新[1] 李荣珍[1] 苏付保[1] 黎素平[1] 

机构地区：[1]广西生态工程职业技术学院广西珍贵乡土树种良种培育中心,广西柳州545004

出　　处：《福建林业科技》2017年第2期69-72,108,共5页Journal of Fujian Forestry Science and Technology

基　　金：广西"十一五"林业科技项目(顶果树组培与高效栽培试验研究;桂林科字[2008]第16号)

摘　　要：以种植于广西南宁、柳州等地的顶果树人工林作为选优林分,采用5株优势木对比法进行选优,测量并分析44株候选优树和220株优势木生长量数据,应用差异显著临界值法确定优树选择标准。结果表明:优树选择标准为:树高≥优势木平均树高1.10倍、胸径≥优势木平均胸径1.09倍、单株材积≥优势木平均单株材积1.37倍。按此标准入选的优树有12株,入选率为27.3%,所选出的顶果树优树可为良种繁育提供基础材料。Acrocarpus fraxinifolius Wight ex Arn.is a high-value tree with a prosperous application.Using the method of 5 dominant trees comparison,44 tall candidate trees and 220 dominant trees were selected and measured from artificial forest of Acrocarpus fraxinifolius Wight ex Arn.After statistical analysis of differential threshold method,the early selective criteria of superior for Acrocarpus fraxinifolius Wight ex Arn.was determined as tree height,DBH（diameter at breast height） and volume were 10%,9%,37% respectively higher than the average 5 dominant trees.There were 12 trees selected from 44 candidate trees,and the selected ratio was27.3%.Those superior trees provide basic materials for breeding.

关 键 词：顶果树 人工林 优树 选择标准 

分 类 号：S722.5[农业科学—林木遗传育种] S792.99[农业科学—林学]