{
  "abstract": "目的为明确多年地膜覆盖配施有机肥对旱作农田土壤有机碳固存的调控效应，揭示土壤结构与微生物群落介导下有机碳积累的内在机制与演变路径。方法以关中平原麦玉轮作体系5 a长期定位试验为基础，设置地膜覆盖（M）与不覆盖、有机肥等氮替代氮肥梯度（0~100%，CK、T0、T25、T50、T75、T100）的双因素裂区试验，2020年和2024年冬小麦收获后测定0~20 cm土壤理化性质与微生物群落结构，结合Pearson相关分析、Mantel检验和偏最小二乘路径模型（PLS-PM）解析有机碳积累路径。结果1）多年覆膜配合有机肥替代显著降低土壤体积质量，促进水稳性团聚体形成，并提高土壤有机碳（SOC）质量分数、储量及氮素水平。试验确定的最优处理为MT75，其土壤体积质量较MCK降低4.67%；机械稳定性大团聚体和水稳性大团聚体（≥0.25 mm）的质量比例分别为97.04%和62.66%，较MCK分别提高0.75%和12.92%；SOC（12.75 g/kg）和有机碳储量（SOCs）（33.80 t/hm²）分别较MCK提高79.97%和80.89%；全氮、硝态氮和铵态氮质量分数分别较MCK提高45.79%、100.21%和46.71%。2）随着试验持续细菌群落丰富度下降而多样性升高，真菌群落丰富度和多样性均下降。Mantel检验表明，细菌群落由早期主要受有机碳和全氮驱动，后期转变为土壤养分与物理结构共同驱动；真菌群落则由碳源驱动转向土壤团聚体结构主导。3）PLS-PM表明，有机碳积累路径由施肥直接驱动转变为团聚体结构优化和土壤微生物群落共同调控，其中2024年土壤团聚体对碳库的路径系数达0.99。结论多年覆膜与有机肥替代可显著改善土壤结构与养分状况，重塑微生物群落结构，其中，覆膜结合75%有机肥替代综合效果最佳。在该条件下，有机碳积累路径由外源有机物投入驱动向团聚体与微生物协同驱动路径转变。",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "王治英"
    },
    {
      "name": "吴淑芳"
    },
    {
      "name": "胡亚瑾"
    },
    {
      "name": "冯浩"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e9ep8dwwf96vd.bib",
  "cited_by": 0,
  "doi": null,
  "fulltext_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.032/",
  "id": "e9ep8dwwf96vd",
  "issns": [
    "1009-2242"
  ],
  "landing_url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.032/",
  "language": "zh",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "lcc",
      "GE1-350"
    ],
    [
      "lcc",
      "S"
    ]
  ],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "Editorial Department of Journal of Soil and Water Conservation",
  "ris": "https://research.draconitic.com/paper/e9ep8dwwf96vd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:44:42Z",
      "native_id": "285f5de54de44848a189b70116ce63fc",
      "source": "doaj",
      "url": "http://www.stbcxb.com.cn/zh/article/doi/10.13870/j.cnki.stbcxb.2026.05.032/"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "lcc:GE1-350",
      "subfield": "environmental-science"
    }
  ],
  "title": "覆膜配施有机肥条件下土壤结构与微生物介导的固碳效应与路径解析",
  "title_text": "覆膜配施有机肥条件下土壤结构与微生物介导的固碳效应与路径解析",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:42Z",
  "url": "https://research.draconitic.com/paper/e9ep8dwwf96vd",
  "venue": "Shuitu Baochi Xuebao",
  "versions": []
}