1. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of EducationNorthwest A&F University Yangling Shaanxi China
2. Institute of Water Saving Agriculture in Arid regions of ChinaNorthwest A&F University Yangling Shaanxi China
3. National Engineering Research Center for Water Saving Irrigation at Yangling Yangling Shaanxi China