摘要
对油松种子园10个无性系20个单株连续3年观测结果表明,无性系顶梢和侧枝的芽都在3月下旬萌动,6月下旬结束生长,年生长节律呈慢一快一慢型;胸径开始生长较树高生长晚,但生长期长,年生长节律呈快一慢一快型;不同无性系的生长差异显著,结合气象因素分析表明,春季降雨对无性系当年高生长作用较显著。
The 3 years' observation on 20 individuals from 10 clones in Badou Chinese pine seed orchard showed that buds in tip and branch germi- nated in the last ten days of March,and stop growing in last ten days of June.The annual growing presented as Fast-Slow-Fast pattern;the diam- eter growing with long growth season begins later than the height' s,the annual growth as Fast-Slow-Fast pattern;the significant difference existed among clones' growing;combining with meteorological factors showed that the rainfall in spring has an important role for tree height growth.
出处
《陕西林业科技》
北大核心
1991年第2期40-44,共5页
Shaanxi Forest Science and Technology
