机译:春季再生期不同秋季休眠的紫花苜蓿品种根系内源激素变化特征
Chinese Research Institute of Water-Saving Agriculture in Arid Areas Northwest A&F University~Key Laboratory of Crop Production and Ecology Minister of Agriculture Yangling 712100 P.R. China;
Center of Enviroment Detection in Tianjin Tianjin 300191 P.R.China;
Colloge of Horticulture Northwest A&F University Yangling 712100 P.R.China;