苗木规格质量与造林成活率、保存率及幼林生长的关系

STUDY ON THE RELATIONSHIPS AMONG SEEDLING QUALITY AND SURVIVAL RATE,STOCKING PERCENTAGE AND YOUNG STAND GROWTH

本文研究了红松、落叶松、樟子松、云杉、水曲柳、黄波罗和椴树的不同苗木等级不同切根处理与幼林高生长、地径生长、造林成活率和翌年保存率的关系。结果表明,Ⅰ级苗高生长、地径生长、造林成活率和翌年保存率最高,Ⅱ级苗稍次、Ⅲ级苗最差。在造林时为保证造林质量,强调选用优良的Ⅰ级苗是非常必要的。

The effects of various seedling classes and root cutting treatments on the survival rate, stocking percentage, height and collar diameter growth of the young stands of Pinus koraiensis, Larix gmelini, Picea koraiensis,Phellodendron amurense,Fraxinus mandshurica and Tilia amurensis were studied in this paper. The results showed that the height and diameter growth, the survival rate and stocking percentage of Ⅰ class seedling are better than that of the Ⅱ class, the Ⅲ class is the lowest. It is important to select Ⅰ class seedling for afforestation.