However, to what extent the higher yield of hybrid than inbred rice depends on N fertilizer input remains unclear.

The gap

Consensus across the literature

Supporting evidence — 4 representative gaps

• Biochar and milk vetch synergistically enhance rice yield and soil fertility via regulating N-cycling in reddish paddy fields (2026) · doi

  However, the effects of the combined application of rice straw biochar (RSB) and MV over multiple years on nitrogen (N) dynamics, microbial ecology, and rice yield remain unclear.

  Keywords: rice effects combined application straw biochar multiple years nitrogen dynamics microbial ecology yield remain unclear
• Nitrogen application timing drives stage-specific rhizosphere ecological clusters that regulate the yield-quality trade-off in hybrid rice (2026) · doi

  However, how N-splitting regimes influence the trade-off between hybrid rice yield and quality, and the underlying rhizosphere microbial mechanisms, remain poorly understood.

  Keywords: splitting regimes influence trade hybrid rice yield quality underlying rhizosphere microbial mechanisms remain poorly understood
• Nitrogen/potassium interactions increase rice yield by improving canopy performance (2021) · doi

  Abstract The interactions between nitrogen (N) and potassium (K) are important determinants of rice yield, but the mechanisms involved remain poorly understood.

  Keywords: abstract interactions nitrogen potassium important determinants rice yield mechanisms involved remain poorly understood
• High yields of hybrid rice do not require more nitrogen fertilizer than inbred rice: A meta‐analysis (2021) · doi

  However, to what extent the higher yield of hybrid than inbred rice depends on N fertilizer input remains unclear.

  Keywords: extent higher yield hybrid inbred rice depends fertilizer input remains unclear