1. Henan Academy of Agricultural Sciences Institute of Plant Nutrition & Resource Environment Zhengzhou PR China
2. Yuanyang Experimental Station of Crop Water Use Ministry of Agriculture Yuanyang PR China
3. Institute of Soil and Water Conservation Northwest A & F University Yangling PR China
4. General Hospital of Jinshui District of Zhengzhou Zhengzhou PR China
5. Hydrology and Quantitative Water Management Group Wageningen University & Research Wageningen The Netherlands