Affiliation: | 1. Department of Soil and Water Sciences, China Agricultural University, No. 2 Yuan Ming Yuan Xi Lu, 100193 Beijing, China;2. Department of Crop and Soil Sciences, North Carolina State University, 101 Derieux Street, Raleigh, NC 27695, USA;3. Department of Plant and Soil Sciences, Oklahoma State University, 368 N. Monroe Street, Stillwater, OK 74078, USA;4. Department of Agronomy, Iowa State University, 100 Osborn Drive, Ames, IA 50011, USA |