Henan University of Science and Technology Luoyang 471023 P.R.China;
Henan University of Science and Technology Luoyang 471023 P.R.China;
Henan University of Science and Technology Luoyang 471023 P.R.China;
Henan University of Science and Technology Luoyang 471023 P.R.China;
Henan University of Science and Technology Luoyang 471023 P.R.China;
Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences/Key Laboratory of Plant Nutrition and Fertilizer Ministry of Agriculture and Rural Affairs Beijing 100081 P.R.China;