
Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1062 - 1062
Published: April 27, 2025
The balanced application of organic and chemical fertilizers is essential for maintaining soil fertility crop productivity. To optimize nitrogen (N) balance maize yield through integrated pig slurry straw mulching management, a split-plot field experiment was conducted in Northeast China. study included two treatments (straw mulching, S; no straw, NS) three substitution levels fertilizer (0%, 20%, 40%; denoted as M0, M20, M40). Parameters evaluated N balance, biomass, available N, the mineral to TN ratio (mineral-N/TN), measured across 0–100 cm at key growth stages. Results showed that significantly increased DON, mineral-N/TN topsoil (0–20 cm) seeding stage decreased milk (10–40 maturity (80–100 Meanwhile, reduced NH4+-N accumulation 0–10 stage, NO3−-N 0–40 layer from jointing stages, lowered topsoil, thereby mitigating risk leaching. Notably, combination slightly DON while reducing deep Pig improved yield, uptake, use efficiency (NUE). highest (14,628 kg ha−1) observed S-M20 treatment, representing 19% increase compared NS-M0. analysis indicated alone uptake but depleted whereas maintained surplus. findings highlight combining with optimizes availability improves sustainable management productivity agroecosystems.
Language: Английский