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Water pollution risk from nitrate migration in the soil profile as affected by fertilization in a wheat-maize rotation system

Author

Listed:
  • Shi, Ning
  • Zhang, Yingpeng
  • Li, Yan
  • Luo, Jiafa
  • Gao, Xinhao
  • Jing, Yongping
  • Bo, Luji

Abstract

Reducing nitrogen (N) fertilizer input into the soil is needed by a crop production and environmental pollution control. A field experiment using a wheat-maize rotation system was conducted in North China Plain (NPL) to evaluate agronomic performance and the reduction of nitrate accumulation. The trial consisted of three replicates of five treatments: no nitrogen (CK), recommended N rate (REC) (180 and 210 kg ha−1 N fertilizer as urea for wheat and maize, respectively), same amount N in the form of controlled release fertilizer (CRF), with addition of duck manure to achieve the same total N rate as REC (80% REC + DM) and conventional fertilization (CF) (315 and 270 kg ha−1 N fertilizer as urea for wheat and maize, respectively). During the continued fertilization of the rotation system, the CRF application had an equal yield, N use efficiency (48%) and residual N (175 kg ha−1) but decreased the estimated N loss (18 kg ha-1) when compared to REC (72 kg ha-1). N accumulated below the root zone in the 40–60 cm soil layer was at a high risk of migrating deeper in the soil profile. Application of CRF could effectively reduce the nitrate N accumulating in the soil, slowing down the rate of nitrate migration to the deep soil.

Suggested Citation

  • Shi, Ning & Zhang, Yingpeng & Li, Yan & Luo, Jiafa & Gao, Xinhao & Jing, Yongping & Bo, Luji, 2018. "Water pollution risk from nitrate migration in the soil profile as affected by fertilization in a wheat-maize rotation system," Agricultural Water Management, Elsevier, vol. 210(C), pages 124-129.
    • Handle: RePEc:eee:agiwat:v:210:y:2018:i:c:p:124-129
    DOI: 10.1016/j.agwat.2018.08.006
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    Cited by:

    1. Lihua Ma & Jiupai Ni & Luuk Fleskens & Han Wang & Yunqing Xuan, 2021. "Modelling Fertilizer Use in Relation to Farmers’ Household Characteristics in Three Gorges Reservoir Area, China," Agriculture, MDPI, vol. 11(6), pages 1-17, May.

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