摘要
从北京大兴县引种的Ｗ４６杨是欧美杨良种无性系，在包头地区经４年的育苗、造林引种试验，表现出生长快，适应性广，抗逆性强的特点。在含盐量０．４３％，有机质０．４８％的造林地上能够正常生长，与当地主栽的杨树小美旱、新疆杨相比，具有明显的优势。对６龄的树木调查，Ｗ４６比同龄的小美旱树高高出２６．６％，地径大６１．３％，胸径大７５．９％。经检验，差异达到极显著水平（Ｐ＝０．０１）。造林后调查，造林成活率达８８％。与原产地Ｗ４６的生长量比较，高、径生长及单株材积相差很小。
46is a improved variety of European-American poplar,which introduced from Daxing,Beijing.After 4 years , introduction in Baotou region,it showed that there were fast growth,wide adaptability and high resistance in this type of poplar ,s growth,In the planting field with 0.43% salt content and 0.48% organic matter content,W 46 grows well.Compared with local poplar (6 years ,old),its height is 26.5% more than that of local poplar,ground diameter is 61.3% more and breast diameter is 75.6% more,difference is significant (p=0.01),survival rate is 88%.the difference is very small when compared with original planting site ,s W 46,the compared items are heignt,diameter and single volume of tree.
出处
《干旱区资源与环境》
CSCD
1998年第2期67-76,共10页
Journal of Arid Land Resources and Environment
关键词
W46杨
育苗
造林
引种
杨树
试验
W 46 variety,seedlings,planting,introduction.
