不同苗龄江南油杉造林早期生长分析  

Early Growth of Keteleeria cyclolepis Stands at Different Seedlings Age

作　　者：邓玉华 蒋琳 伍玲丽 肖啸 陶敏 王文刚 唐连德 DENG Yuhua;JIANG Lin;WU Lingli;XIAO Xiao;TAO Min;WANG Wengang;TANG Liande(Guangxi State-owned Huangmian Forest Farm,Luzhai 545600,Guangxi,China)

机构地区：[1]广西国有黄冕林场,广西鹿寨545600

出　　处：《桉树科技》2022年第2期43-47,共5页Eucalypt Science & Technology

基　　金：中央财政林业科技推广项目“江南油杉高效栽培技术推广与示范”([2018]TG 14号)。

摘　　要：为了解不同苗龄江南油杉造林的早期生长情况,对广西黄冕林场不同苗龄江南油杉的试验示范林进行调查,并对1~2年生幼树树高生长开展试验分析。结果表明:试验林造林成活率均在88.89%以上,不同样地差异不大,不同苗龄的成活率随着苗龄增大而提高。不同样地江南油杉树高H1、H2仅3年生苗存在着显著差异,但不同苗龄间H1、H2差异显著。样地与苗龄的因子效应分析表明,苗龄为树高生长的主要因子且在H1、H2上存在着交互效应。样地S2与3年生苗因子水平组合,有△H最大理论值64.87cm。选择3年生江南油杉苗木造林有利于林分生长。In order to understand the early growth of Keteleeria cyclolepis of different seedling ages,experimental demonstration forests of K. cyclolepis in Huangmian Forest farm of Guangxi were investigated with height growth of 1 ~ 2 year old saplings being evaluated. The results showed that the survival rate of the trial forests was above 88.89%, and there was little difference among locations. The survival rates among different seedling ages increased as seedling age increased. There were significant differences in H1 and H2heights only at age 3 years, but there were no significant differences among seedlings at other age. Analyses examining the effects of plot and seedling age showed that seedling age was the main factor influencing tree height growth and that there was an interaction effect involving plot and seedling age for H1 and H2. The maximum theoretical value of △H was 64.87 cm in the combination of S2 and 3-year old seedling factors.Selecting 3-year-old K. cyclolepis seedlings for afforestation is beneficial to stand growth.

关 键 词：江南油杉 苗龄 树高生长 早期生长 

分 类 号：S758.52[农业科学—森林经理学]