Effects of mixed sowing ratio on root properties of Medicago sativa and Agropyron cristatum

• (HOU Yurong, 
• XU Yingyue, 
• LAN Jiyong, 
• KE Mei, 
• WEI Peng, 
• XU Xuejiao, 
• KANG Shuai, 
• ZHOU Qi, 
• WANG Yuxiang