ArticleFrontiers in plant science2025
Long-term nitrogen management strategies based on straw return improve soil carbon and nitrogen fractions and nitrogen use efficiency of maize in the Tumochuan Plain Irrigation District.
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Conservation Tillage-Mediated Rhizosphere Microbial Community Remodeling Drives Soil Organic Carbon Accumulation and Nitrogen and Phosphorus Transformation in Farmland.Microorganisms · 2026Article
- Regulatory Effects of "Straw-Nitrogen Fertilizer" on Maize Yield Enhancement.Plants (Basel, Switzerland) · 2026Article
- Impact of wheat straw incorporation and fertilizer reduction on peanut yield and soil functions.Frontiers in plant science · 2026Article
- Corncob Returning Enhances Soil Fertility and Rhizosphere Microbiome Functions to Improve Growth and Nutrient Uptake ofBiology · 2025Article
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Abstract
Introduction: Straw return combined with rational nitrogen (N) fertilization plays a critical role in coordinating the transformation of soil organic carbon and nitrogen availability, thereby improving nitrogen use efficiency (NUE), crop yield, and soil fertility. However, the dynamics of soil carbon and nitrogen fractions under straw return with varying N inputs, and their specific contributions to NUE and yield, remain unclear. Methods: A three-year split-plot field experiment was conducted in the Tumochuan Plain Irrigation District. The main plots included deep plowing with straw return (DPR) and no straw return (RT), while subplots comprised four N application rates (0, 210, 255, and 300 kg ha Results: Compared to RT, DPR significantly improved soil nutrient levels and labile C and N fractions in the 0-40 cm soil layer. Maize yield, NUE, and PFPN increased by 17.28%, 18.24%, and 17.88%, respectively. Under DPR, a linear-plus-plateau model estimated the optimal N rate at 237.3 kg ha Discussion: Straw return enhanced soil nitrogen availability and maize productivity by improving MN and SQI. Even with a 15-20% reduction in N application, DPR sustained high soil C and N fractions, yield, and NUE. These results offer practical guidance for optimizing N management under long-term straw return, with significant implications for sustainable maize production and soil fertility enhancement.
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