Study on Growth Features of Juglans nigra Juvinile Trees in Introduced Area

By using stem analysis method,the diameter at breast high,height and volume growth of Juglans nigra, Juglans mandshurica and Juglans regia were studied and compared.The results showed that under similiar site conditions,the growth of Juglans nigra is higher than that of Juglans mandshurica and Juglans regia .