The variations of wheat-maize production, soil organic carbon, and carbon footprints: insights from a 20-year on-farm observational experiment in the North China Plain.

Front Plant Sci · 2025 · PMC12066458 · PMID 40357156

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an increasing trendno p-value reported

Over the 20-year period, an increasing trend in SOC was observed during the winter wheat season, rising from 16.8 g kg −1 to 18.3 g kg −1 .

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