马尾松分级苗造林试验初报

马尾松分级苗经过造林试验,结果表明,造林当年抽高生长和地径生长差异均显著,四年生幼林的树高和地径生长差异均达到极显著,说明采用Ⅰ级苗造林明显优越于Ⅱ、Ⅲ级苗,改变了以往认为马尾松大苗造林成活率低的习惯看法。同时,还对不同等级苗木造林后生长差异的原因,作了初步分析和探讨。

A Preliminary Study on Using the Classified Nursery Stocks of the Masson Pine for Plantation

The tesults from the silviculture experiments using the classified nursery stocks of the masson pine showed that after planting, there were obviously differences in the top growth and diameter of the first year and extremely differences of the four years. Thus using class I nursery stocks of the masson pine for the plantation, its growth had an advantage over class I and class I nursery stocks, so that the idea that the older nursery stocks of masson pine used for the plantation have been commonly considered as a lower survival in the past is changed. And the cause of growth difference has also been analysed on the different classification of nursery stock in this paper.