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A 3-year field study in southeast China was performed to examine the relationship between N2O emission and winter wheat production. Over the 2002–03, 2003–04 and 2004–05 wheat-cropping seasons, N2O emissions depended on nitrogen addition, plowing practice, and preceding crop type treatments, and showed a pronounced inter-annual variation. N2O–N emission factor, the proportion of fertilizer N released...
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