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    Effects of fertilization on nutrient budget and nitrogen use efficiency of farmland soil under different precipitations in Northeastern China

    Based on a consecutive 16-year field trial and meteorological data, the effects of fertilization on the nutrient budget and nitrogen use efficiency in farmland soil under different precipitation years were stu...

    Qiang Ma, Wan-Tai Yu, Shan-Min Shen, Hua Zhou in Nutrient Cycling in Agroecosystems (2010)