摘要
研究了降香黄檀(Dalbergia odorifera)幼苗的年生长规律,结果表明,降香黄檀苗木生长进程表现出明显的"慢一快一慢"的"S"型曲线,且具有明显的阶段性;一年中,苗木的高生长有3次生长高峰,地径生长有2次生长高峰。依据降香黄檀幼苗地上部分生长特点,可以将苗木的生长过程划分为4个生长时期:出苗期、生长初期、生长盛期、生长后期。生长盛期约118 d,高生长量最大,占整个高生长量的64.77%。
Study was carried out on growth rhythm of precious tree species of Dalbergia odorifera seedlings in Guangxi Zhuang Autonomous Region.The result showed that the annual growth rhythm of seedling was shaped of ＂S＂ curve,and had obvious phase.Within one year,there were respectively three and two peaks of height and basal diameter growth.According to above-ground part growth characteristics of the plant,seedling growth could be divided into four stages： emergence,initial growth,fast growth and later growth phase.Fast growth phase had 118 days from the first growth peak to the last growth peak with the height increment of 64.77% of the total one.
出处
《浙江林业科技》
北大核心
2010年第3期56-60,共5页
Journal of Zhejiang Forestry Science and Technology
基金
广西"十一五"林业科学研究项目(林科字〔2007〕第23号)
广西大学博士启动基金项目
关键词
降香黄檀
幼苗
生长节律
Dalbergia odorifera
seedling
growth rhythm
