长江经济带农田氮素平衡特征与污染风险评估分析
段扬, 吴文俊, 蒋洪强, 李勃, 杨勇
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生态环境学报 . 2020, (7): 1344 -1351 .  DOI: 10.16258/j.cnki.1674-5906.2020.07.008