1. Institute of Soil and Water Conservation, Northwest A&f University, Yangling, Shaanxi, China
2. Sweet Cherry Technology Innovation Center of Gansu Province/Tianshui Engineering Research Center for Agricultural Products Deep Processing, College of Bioengineering and Biotechnology, Tianshui Normal University, Tianshui, Gansu, China
3. Northwest Historical Environment and Economic and Social Development Research Institute, Shaanxi Normal University, Xian Shaanxi,China