秸秆还田与氮磷配施可有效供应作物养分，是一种养分资源节约型的施肥制度。
Application of straw and chemical fertilizer could be regarded as a kind of nutrition-resources-saved fertilization system and could provide crop nutrition efficiently.
结果表明：与NPK处理比较，玉米秸秆还田配施低量N肥没有显著促进黑土有机碳的积累。
The results showed that maize straw returning field combined low amount N did not promote the accumulation of organic carbon significantly, as compared with NPK treatment.
有机、无机物料配施和秸秆还田是快速提高南方红壤地区不同母质土壤有机质含量的重要措施。
Suggesting the combined application of organical and chemical fertilizer and straw returning is the most effective measure to in crease soil organic matter.
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