1. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, P.R. China
2. Institute of Agricultural Mechanization, Xinjiang Academy of Agricultural Sciences, Urumchi, P.R. China
3. Circular Agriculture Research Center, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Crop and Livestock Integrated Farming, Ministry of Agriculture, Nanjing, P.R. China
4. Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, USA