广西林业科学2025，Vol.54Issue(2)：167-172,6.DOI:10.19692/j.issn.1006-1126.20250206
修枝强度对不同林龄马尾松生长的影响
Effect of Pruning Intensity on Growths of Pinus massoniana at Different Stand ages
摘要
Abstract
In order to reveal effect of pruning on growths of Pinus massoniana at different stand ages,taking 3.5-year-old,4.5-year-old and 5.5-year-old P.massoniana plantations as research objects,1/3,1/2 and 2/3 pruning intensities were set up.DBHs and tree heights were monitored continuously for two years,and individu-al volumes were calculated to explore effects of different pruning intensities on DBH,tree height and individual volume of P.massoniana.Results showed that different pruning intensities had different effects on growths of P.massoniana at different stand ages.3.5-year-old P.massoniana had the highest proportion of positive rela-tive growth rate indexes(66.7%),followed by 5.5-year-old P.massoniana(55.6%),while 4.5-year-old P.mas-soniana had the lowest proportion of positive relative growth rate indexes(40.7%).Optimal pruning age for P.massoniana was 3.5 years.Pruning promoted growth of 3.5-year-old P.massoniana,with slightly better growth under 1/3 pruning intensity compared to 1/2 and 2/3 pruning intensities.Different pruning intensities obviously inhibited growth of 4.5-year-old P.massoniana.1/3 pruning intensity enhanced growth of 5.5-year-old P.mas-soniana,while 1/2 and 1/3 pruning intensities inhibited growth of 5.5-year-old P.massoniana.For pruning management of P.massoniana in Guangxi,it was recommended to prune at 3.5 years while avoiding pruning at 4.5 years.关键词
修枝强度/生长影响/马尾松Key words
pruning intensity/growth impact/Pinus massoniana分类
农业科技引用本文复制引用
汤毕杰,徐增富,杨章旗,唐生森,陆相佑,陆康,苏朝宝,张志豪..修枝强度对不同林龄马尾松生长的影响[J].广西林业科学,2025,54(2):167-172,6.基金项目
国家重点研发计划项目(2023YFD2200904) （2023YFD2200904）
广西科技基地和人才专项(桂科AD19254004) （桂科AD19254004）
广西八桂学者专项(2019A026) （2019A026）
中央财政林业科技推广示范项目([2022]TG22号) （[2022]TG22号）
广西自筹经费林业科技项目(桂林科研[2022ZC]第90号) （桂林科研[2022ZC]第90号）
