土壤熏蒸是防控连作障碍土传病害的有效手段之一，其广谱杀生特性在杀灭病原菌的同时严重扰动氮转化功能微生物群落，导致氮素形态转化受阻。生物有机肥可加速熏蒸后土壤微生态重建，但其驱动机制尚不明晰。根系分泌物作为植物调控根际微生物组的核心媒介，其特定组分的定向招募功能为解析这一机制提供了新视角。本文在梳理土壤熏蒸剂对微生物群落及氮转化功能微生物的影响、生物有机肥对熏蒸土壤微生态的修复效应的基础上，从有机物料碳氮底物的基础驱动、根际微生态协同调控机制、根系分泌物在熏蒸土壤微生物重建中的介导作用以及氮转化功能菌群的差异化响应规律等方面综述了生物有机肥驱动熏蒸土壤氮转化的调控机制，旨在为探究生物有机肥驱动熏蒸土壤氮转化微生物重组机制提供参考。

Soil fumigation is one of the effective measures for controlling soil-borne diseases associated with continuous crop.ping obstacles.However,itsbroad-spectrumbiocidal propertiesnotonly eliminate pathogens but also severelydisturb microbial commu.nities involved in nitrogen transformation, thereby hindering the conversion of nitrogen forms in soil. Bio-organic fertilizer can acceler.ate the reconstruction of soil microecology after fumigation, but its underlying driving mechanisms remain unclear. As a key mediatorthrough which plants regulate the rhizosphere microbiome, root exudates provide a new perspective for elucidating this mechanism be.cause specific components can selectively recruit functional microorganisms. Based on literatures of the effects of soil fumigants on mi.crobial communities and nitrogen-transformation functional microorganisms, as well as the restorative effects of bio-organic fertilizer onthe microecology of fumigated soil, this paper summarizes the regulatory mechanisms by which bio-organic fertilizer drives nitrogentransformation in fumigated soil from the perspectivesof thebasic drivingroleof carbon and nitrogen substrates in organicmaterials, syn.ergistic regulation of the rhizosphere microecology, the mediating role of root exudates in microbial reconstruction in fumigated soil, andthe differential response patterns of nitrogen-transformation functional microbial communities. This review aims to provide a referenceforinvestigating the microbialreassemblymechanismsbywhichbio-organicfertilizerdrivesnitrogen transformationinfumigated soil.

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甘肃省农业科学院重点研发计划( 2025GAAS33)；甘肃省农业科学院科研结余资金项目( 2024LGS08)；甘肃省自然科学基金( 26JRRA472)。