关键词: 核桃, 枝条, 解剖结构, 生长势

Abstract: The six years walnut（Juglans regia L）cultivars and three years seedlings were used as material to study the relationship between the anatomical structure of shoots and growth vigor of walnut in the same year. The results indicated that the anatomical structure of shoots of different walnut cultivars had insignificant correlation with the growth vigor. But the anatomical structure of shoots of different walnut seedlings had significant correlation with the growth vigor. The rate of wood/Transverse area had positive significant correlation with the increment of tree height, tree height and trunk girth. The rate of Wood/ Bark had positive correlation significantly with the increment of tree height and tree height.The Pith area had strikingly negative relationship with tree height and trunk girth. The bark area had strikingly with the increment of tree height . The vessel density had insignificant correlation with the growth vigor.

Key words: Juglans regia L., shoots, anatomical structure, growth vigor