固氮菌修复退化土壤的研究进展

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中图分类号：S156 文献标识号：A 文章编号：1001-4942（2026）01-0181-08

Research Progress of Nitrogen Fixing Bacteria in Remediation of Degraded Soil

Ming Tianwei， Ruan Haihua， Zhang Hongyang，Wu Tao， Zhang Yan， Song Wenjun （ School of Biotechnology and Food Science， Tianjin University of Commerce/ Tianjin Key Laboratory of Food Biotechnology，Tianjin ， China）

AbstractHuman irrational production activities have led to severe soil degradation. Microbial remediation technology with low cost and environmentally friendly advantages has become a hot research topic in the field of soil remediation.The low available nitrogen content in degraded soils directly impacts the remediation effectiveness of microbes and plants. Nitrogen-fixing bacteria can convert atmospheric nitrogen （ N2 ） into biologically available nitrogen，boosting nitrogen levels in the environment，and playing acrucial role in the biological restoration of degraded soils. Using three typical degraded soil of saline-alkali soil，high-altitude degraded grassland，and heavy metal-contaminated soil as the cases，this article systematicall introduced the research progress of nitrogen-fixing bacteria in improving soil quality and crop resilience，and the significant role in promoting plant growth.By discussing the status and role of nitrogen-fixing bacteria in soil remediation，this article aimed to explore the important application potential of nitrogen-fixing bacteria，providing a reference for formulating future effective strategies in microbial remediation of degraded soils.

KeywordsNitrogen fixing bacteria；Degraded soil； Remediation；Heavy metal polution； Salinizecsoil；Grassland degradation

随着人口、资源和环境之间矛盾的不断尖锐化，人们赖以生存和发展的土壤及土地资源的质量退化日趋严重。（剩余17137字）