深山含笑人工林生长规律的初步研究

Preliminary Study on Growth Rhythm of Man-made Michelia maudiae Forest

通过对深山含笑人工林试验观察,深山含笑人工林在幼林阶段树高生长较快,前5a的年均生长量在0.8m以上,生长高峰期出现在第3～4年,年生长量接近1m,从第6年开始逐渐减慢;胸径生长速生期为前10a,从第3年开始,即进入生长高峰,年生长量达到1cm以上,一直持续至第10年;在前18a,材积增长一直处于上升阶段,并随树龄增大而加快,18年生时,还未见有减慢现象。

Observations on man-made Michelia maudiae forest demonstrated that height growth was quick during young. The mean height growth of the first 5 years reached 0.8m/year, the peak period at the third and fourth year with the increment of 1 meter/year which will last for 10 years. Volume increment will last more than 18 years.