摘要
为了解修枝对尾巨桉无性系生长的影响,本研究设置1/2强度修枝、1/3强度修枝、不修枝增加50 g·株^(-1)追肥和不修枝、不增加追肥作为对照,分析修枝前后尾巨桉生长量的影响。结果表明:不同修枝处理对树高增长量影响差异显著,对胸径和单株材积影响差异不显著;尾巨桉胸径增长呈现出随修枝强度增加而降低的趋势,修枝对胸径增长的影响差异不具有统计学意义;不同生长时间对尾巨桉树高、胸径和单株材积影响差异极其显著;综合考虑树高和单株材积两项指标,对尾巨桉生长较适宜的修枝强度为中度修枝P3。
In order to understand the effect of pruning on the growth of E.urophylla×E.grandis,this study established a field trial with treatments of:pruning to 1/2 height;pruning to 1/3 height;no pruning and additional fertilization of 50 g·tree^(-1);and,a control treatment involving no pruning and no fertilization.The effect of pruning on the growth Eucalyptus was examined by evaluating growth in each treatment before and after pruning.The results showed that different pruning treatments had significant differences in height growth.However,while there was a trend of decreasing DBH growth with increasing pruning intensity,differences among treatments for DBH growth were not statistically significant.Growth periods of different lengths showed significant differences for height,DBH and individual tree volume growth.Considering both height and individual tree volume,moderate pruning(pruning to 1/2 height)is the most suitable for the growth of Eucalyptus.
作者
苏福聪
李书玲
黄慧敏
刘杰钊
罗克展
梁志诚
刘媛
任世奇
SU Fucong;LI Shuling;HUANG Huimin;LIU Jiezhao;LUO Kezhan;LIANG Zhicheng;LIU Yuan;REN Shiqi(Guangxi State-owned Qipo Forest Farm,Nanning 530225,Guangxi,China;Guangxi Forestry Research Institute,Nanning 530002,Guangxi,China;Guangxi Nanning Eucalypt Plantation Ecosystem Observation and Research Station,Nanning 530002,Guangxi,China)
出处
《桉树科技》
2021年第1期31-35,共5页
Eucalypt Science & Technology
基金
广西林业科技与推广项目(gl2018kt11)
自治区林业科技推广示范项目(gl2020kt03)
广西林业科技项目(桂林科研〔2015〕第19号)。
关键词
修枝
尾巨桉
生长量
单株材积
pruning
Eucalyptus urophylla×E.grandis
growth
individual volume
