What question did this study set out to answer?

To evaluate whether blending controlled-release urea with conventional urea sustains crop yields and enhances soil organic carbon storage under reduced nitrogen input in a rice–wheat rotation.

August 30, 2026Food and Energy SecurityOpen Access

Controlled‐Release Urea Combined With Urea Sustains Yield and Improves Soil Organic Carbon Storage Under Reduced Nitrogen in Rice–Wheat Rotation

Q: What does this research mean for the field?

Blending 70% controlled-release urea with 30% conventional urea as basal fertilizer increases crop yields and improves soil organic carbon storage under reduced nitrogen conditions in rice-wheat rotations. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

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To evaluate whether blending controlled-release urea with conventional urea sustains crop yields and enhances soil organic carbon storage under reduced nitrogen input in a rice–wheat rotation.
Tested nine fertilization treatments combining controlled-release urea (CRU) and conventional urea (U) as basal and panicle fertilizers across a 3-year rice–wheat rotation.
Evaluated performance under both conventional nitrogen application and reduced nitrogen application levels.
Measured annual crop yields, plant carbon accumulation, soil organic carbon (SOC) storage, and labile organic carbon fractions.
CRU combined with U increased annual crop yields by 15.37% under conventional nitrogen levels and by 8.32% under reduced nitrogen levels compared with urea alone.
A basal fertilization ratio of 70% CRU and 30% U significantly enhanced plant carbon content, SOC storage, labile organic carbon fractions (ROC, DOC, MBC), and the carbon pool management index under reduced nitrogen.
Soil organic carbon peaked at an available alkaline hydrolyzable nitrogen concentration of 150 mg kg⁻¹, with crop yields positively correlated with SOC and labile carbon fractions.

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Implication

Field experiment demonstrates improved annual crop yields and enhanced soil organic carbon storage in rice–wheat rotations, indicating a practical strategy for reduced nitrogen farming.

Cite This Study

Tao et al. (2026) studied this question.

synapsesocial.com/papers/6a93f0476c1a8fb52e79c3fb https://doi.org/10.1002/fes3.70301

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Implication

Field experiment demonstrates improved annual crop yields and enhanced soil organic carbon storage in rice–wheat rotations, indicating a practical strategy for reduced nitrogen farming.

Controlled‐Release Urea Combined With Urea Sustains Yield and Improves Soil Organic Carbon Storage Under Reduced Nitrogen in Rice–Wheat Rotation

Key Points

Discussion

Implication

Cite This Study

Controlled‐Release Urea Combined With Urea Sustains Yield and Improves Soil Organic Carbon Storage Under Reduced Nitrogen in Rice–Wheat Rotation

Key Points

Discussion

Implication

Cite This Study

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