云杉3种21种源选择研究

Selection Study on Twenty One Provenances of Three Species of Picea asperata

摘要:

摘要：对湖北省宜昌市夷陵区国有樟村坪林场的3个种21个种源5年生（包括苗龄2年）云杉试验林观测数据进行分析，结果表明：成活率和保存率、平均胸径、树高冠幅均表现出欧洲云杉最好，最优良种源是5号和6号种源，其立木单株树高比其它2个种平均树高提高24.7%。

Abstract:

Abstract:The analysis of Picea asperata test forest observational data of 21 provenances in 3 species 5 year old (including 2 years' seedling age) in Zhangcunping Forest Farm in Yiling district in Yichang city in Hubei province. The results showed that Picea abies was best in the survival and preservation rate, average diameter at breast height, tree height and crown width of the best provenances were the fifth and the sixth, its stumpage plant tree height increased 24.7% higher than the other two kinds of tree average height.