Assessment of nitrogen inputs and loss risks in maize fields at the county scale in the Qingtongxia Irrigation District, Ningxia
1Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan, Ningxia 750002, China
2College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaaxi 712100, China
3Qingtongxia Science and Technology Bureau, Wuzhong, Ningxia
4Qingtongxia Agricultural Technology and Agricultural Mechanization Extension Service Center, Wuzhong, Ningxia
5Yinchuan Agricultural Technology Promotion Service Center, Yinchuan, Ningxia
6Shizuishan Agricultural Technology Promotion Service Center, Shizuishan, Ningxia
7Wuzhong Agricultural Technology Promotion Service Center, Wuzhong, Ningxia
8State Key Laboratory of Efficient Utilization of Arid and Semiarid Arable Land in Northern China / Key Laboratory of Non-point Source Pollution Control, Ministry of Agriculture and Rural Affairs / Changping Soil Quality National Observation and Research Station / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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