1. College of Forestry and Prataculture, Ningxia University, Yinchuan, China
2. Department of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA
3. School of Agriculture, Ningxia University, Yinchuan, China
4. State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, China