摘要
调查广西10年生杉木第二代良种林分生长量,分析杉木第二代良种在广西不同区域的适应性及增益效果,将良种林分生长量与行业标准及广西地方标准规定的杉木中心产区低限指标进行比较。结果表明,杉木第二代良种林分生长量在不同试验点间差异显著;3个试验点的良种林分树高、胸径和单株材积均极显著高于对照林分,树高、胸径和单株材积的平均增益分别为47.2%、50.8%和215.8%;10年生良种林分的树高、胸径、年均蓄积生长量和蓄积量均达到行业标准规定的杉木中心产区16年生时的低限指标要求,年均蓄积生长量和蓄积量达到广西地方标准规定的杉木中心产区15年生时的要求。
Growths of second generation improved variety stands of Cunninghamia lanceolata in Guangxi were investigated,and adaptation and gains of improved variety stands in different regions were analyzed.Growths of improved variety stands were compared with final cutting index requirements of central areas in industry standard and local standard of Guangxi.Results showed that there were significant differences on growths of second generation improved variety stands among three test sites.Tree height,DBH,individual volume in three test sites were extremely significant higher than those of control stands,and average gains of tree height,DBH and individual volume were 47.2%,50.8%and 215.8%,respectively.Tree height,DBH,annual average accumulation increment and accumulation of 10-year-old improved variety stands had achieved final cutting index requirements of 16-year-old stand in central areas in industry standard,and annual average accumulation increment and accumulation had achieved final cutting index requirements of 15-year-old stand in central areas in local standard of Guangxi.
作者
戴俊
陈代喜
黄开勇
董利军
黄鹏艳
罗启亮
谭文婧
王晓波
唐红亮
Dai Jun;Chen Daixi;Huang Kaiyong;Dong Lijun;Huang Pengyan;Luo Qiliang;Tan Wenjing;Wang Xiaobo;Tang Hongliang(Guangxi Forestry Research Institute,Key Laboratory of Central South Fast-growing Timber Cultivation of National Forestry and Grassland Administration,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning,Guangxi 530002,China;State-owned Beijianghe Forest Farm,Rongshui,Guangxi 545300,China;Xianshui Forest Farm,Quanzhou,Guangxi 541500,China;Xishan Forest Farm,Rong’an,Guangxi 545400,China)
出处
《广西林业科学》
2020年第2期237-240,共4页
Guangxi Forestry Science
基金
广西创新驱动发展专项资金项目(桂科AA17204087-5)
国家重点研发计划项目(2016YFD0600302-3)
广西科技计划项目(桂科AB16380052)
国家科技支撑计划子课题(2015BAD09B010105)。
关键词
生长量调查
杉木
广西
第二代良种
growth investigation
Cunninghamia lanceolata
Guangxi
second generation improved variety
