Effects of animal manure and nitrification inhibitor on N₂O emissions and soil carbon stocks of a maize cropping system in Northeast China.

Maize grain yield and aboveground biomass Across the four-year observation period, although the yearly average of maize yield of AM amendment treatment (NPKM and NPKI + M) had an increasing trend relative to NPK treatment, the repeated measurement analysis of variance showed that the difference between these treatments was not significant ( p > 0.05, Table 1 ).

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