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A variable-charge (VC) and a permanent-charge paddy soil (PC) were selected to study nitrate-N (NO_3~--N) and ammonium-N......
采用15N微区示踪法研究了不同利用年限、不同坡位的红壤水稻田N素的运移特征与去向.试验结果表明:红壤地区新、老水稻田成熟期肥料......