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Yield and N use efficiency of a maize–wheat cropping system as affected by different fertilizer management strategies in a farmer's field of the North China Plain

Crop ProductionEngineeringLand UseCropping SystemSustainable AgricultureCrop ManagementAgricultural EconomicsAgricultural EfficiencyCrop YieldFarming SystemsNorth China PlainField CropPublic HealthAgricultural ProductivityCrop Varieties