Institution: | 1. Col ege of Natural Resources and Environment, Northwest A&F University, Yangling 712100, P.R.China 2. Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China 3. Institute of Plant Nutrition and Environmental Resources Science, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P.R.China 4. Agricultural Resources and Environment Research Center, Jilin Academy of Agricultural Sciences, Changchun 130124, P.R.China 5. School of Environment and Natural Resources, The 0hio State University/The 0hio Agricultural Research and Development Center, Wooster, 0H 44691, USA |