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February 14, 2026Agriculture0 citationsOpen Access

Microbial Mechanisms of Soil N2O Emission Mitigation via Organic Fertilizer

The Microbial Mechanisms Underlying Soil N2O Emission Mitigation via Organic Fertilizer Substitution in Maize Cropping Systems

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Authors

YLYing LiuHWHaiyan WuYFYing Feng

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Overview

Long-term field experiment finds that one-third sheep manure reduces N2O emissions in maize systems, indicating effective organic substitution.

Key Points

  • This research aims to examine how substituting chemical nitrogen fertilizers with organic amendments affects N2O emissions and microbial activity in maize cropping systems.
  • Conducted a long-term field experiment in maize cropping systems
  • Monitored in situ N2O flux and performed soil analysis
  • Employed metagenomic sequencing to analyze microbial communities
  • Tested varying ratios of sheep manure substitution for chemical N fertilizers
  • One-third substitution of chemical N with sheep manure reduced N2O emissions by 18.64% in 2021 and 47.00% in 2022
  • Soil nitrate and ammonium concentrations significantly decreased
  • Soil organic matter increased with organic substitution
  • Enhanced abundance of denitrification-related genes was observed
  • Partial least squares path modeling indicated soil properties indirectly reduced N2O emissions through microbial community regulation

Cite This Study

Liu et al. (2026) studied this question.

synapsesocial.com/papers/699011522ccff479cfe57e96https://doi.org/10.3390/agriculture16040420
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