摘要
对齐齐哈尔市青年林场不同类型黑钙土条件下小黑杨的生长进行了研究。通过树干解析对小黑杨的生长进程进行了分析，明确了树高、胸径的速生期在2—7a；碳酸盐草甸黑钙土地位级为20，沙土型黑钙土为14，前者地力较好。达到标准年龄时不同类型蓄积相差181．56％，草甸型黑钙土比砂土型黑钙土高出86．22％-181．56％。
Growth of Populus simonii x P. nigra which were cultivated on different types of chernozem in Qingnian forest farm in Qiqihar city were studied. Growth process of Populus simonii x P. nigra whose fast-growing period of tree height and DBH is during 2-7 a were analyzed through stem analysis ; site class of carbonate meadow chernozem is 20, and sandy chernozem 14, and the land capability of former is better. Different types of accumulation differ 181.56% while reaching standard age. Accumulation of meadow chernozem is 86.22%-181.56% higher than sandy chernozem.
出处
《防护林科技》
2008年第5期31-32,53,共3页
Protection Forest Science and Technology
关键词
小黑杨
立地类型
生长特性
Populus simonii x P. nigra
site type
growth characteristics
