In order to determine the differences of root characteristics of different rice cultivars under different cultivations, the field pot experiments were carried out for two years in Hunan. The results show that dry weight, and α NA oxidation ability, and uptake contents of seven metal elements of roots of high protein convention rice Xiangzaoxian24 and high protein hybrid Weiyou56 are obviously higher than those of low protein convention rices Xiangzaoxian13 and Zhongyou81, and low protein hybrid Jinyou974. The rice root growth under Sanzhuangsa...
