Long-term application of different organic materials enhance soil organic carbon stability and sequestration in saline-alkali paddy soils
Jun Wang
Organic materials are widely used to enhance soil organic carbon (SOC) storage, but their comparative effects and underlying mechanisms in saline-alkali soils remain unclear. A field experiment was conducted in the Yellow River Delta to evaluate the effects of different organic materials on SOC sequestration and soil structure in saline-alkali paddy soil. Four treatments were included: mineral fertilizer alone (NPK), NPK plus organic fertilizer (NPKC1), NPK plus biochar (NPKC2), and NPK plus ric