The experiments of cultivar comparison were carried out using Zhongqiusucui zao, Jidan zao, Chaling dongzao, Muzao, Zhanhua dongzao, Tangzao and Niunaizao as materials by completely random block experimental design in Qidong, Hunan province. Height, stem diameter, canopy size, quantity of fruiting branch, quantity of the first year fruiting branch, percentage of fruiting branch, fruit weight and yield of each plant were measured in local nursery for continuous four years, and average numbers were used as characteristic value. The results showed that the comprehensive characters of Zhongqiusucu...