摘要
对延边地区天然赤松进行了全生长季各种生长因子的测定.结果表明,赤松全年出现1次生长高峰,树高生长呈近S型曲线,生长停止后,胸径生长出现2次生长峰,呈双峰型,叶生长率随林龄的增加而减小,侧枝生长与树高生长同时进行.
The growth factors of natural Pinus densiflora in every season in Yanbian region were determined. The results showed that the Pinus densiflora appeared one growth peak each year,and the growth approached 'S' curve. The growth of breast diameter emerged double-peak which showed double-humped curve after the tree height stopped growing. The growth rate of leaves decreased with the increase of forest age. The growth of lateral branch grew with the tree height simultaneously.
出处
《延边大学农学学报》
2005年第1期6-9,共4页
Agricultural Science Journal of Yanbian University
基金
国家自然科学基金资助项目(39760065)
关键词
天然赤松
生长规律
生长因子
natural Pinus densiflora
growth law
growth factor
