Inorganic elements analysis on soil of cultivated land of Radix isatidis in Zhangye area
LI Chengyi;YANG Miaomiao;ZHANG Yingshan;WANG Mingwei;Pharmacy College of Gansu University of Chinese Medicine;Durg and Equipment Section of Xi’an Brain Disease Hospital of TCM;Modern Pharmaceutical Engineering Research Institute of Chinese Medicine in Gansu Province;