关键词: 北美, 杂交杨, 北京, 引种, 苗期适应性

Abstract: Referring to the similarity of latitude and climate, thirty-one poplar clones which were widely planted in USA were introduced to China, and investigated for their adaptability in Beijing. This paper reported the primary evaluation of cutting livability, phenological calendars and growth rate of these clones at nursery phase. The results showed that all these clones were adaptive to the low temperature and seasonal drought in Beijing. The cutting livability was more than 90%. Significant difference was found in their phenological calendars and growth rate. Seventeen clones showed good adaptability and rapid growth. They were recommended as key clones for further study.

Key words: North America, hybrid poplar, Beijing, introduction, nursery phase, adaptability