植物根際促生菌在農(nóng)業(yè)可持續(xù)生產(chǎn)中的應用

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The Application of Plant Growth-Promoting Rhizobacteria（PGPR） in Sustainable Agricultural Development

SU YingYing'，ZHU WeiJie'，XING YongXiu2*

（'GuangxiKeyLaboratory of SugarcaneBiology/CollgeofAgriculture，Guangxi University，Nanning，Guangxi

530004，China； 2College of Agriculture，Guangxi University/NationalDemonstration Center for Experimental Plant Science Education，Nanning， Guangxi 530004， China）

Abstract： With growing global emphasis on sustainable agricultural development， efficient and environment-friendly approaches for stabilizing and enhancing crop production have become an important direction of currnt research. Plant growth-promoting rhizobacteria （PGPR）， as a kind of microbial resources that can promote plant growth， increase crop yields， and improve soil conditions， have garnered significant attention due to their promising application prospects and more and more important role in agricultural production. This paper summarized the application potential and challenges associated with PGPR inoculants in sustainable agriculture， outlined future research directions and application prospects， so as to provide new insights for enhancing agricultural sustainability.By reviewing relevant literature，the paper analyzed the concept of PGPR，its growthpromoting mechanisms， and the factors influencing the effectiveness of PGPR inoculants.The results indicated that PGPR inoculants presented great application potential in promoting sustainable agriculture by virtue of multiple functions including nitrogen fixation， phosphorus dissolving， potassium release， secretion of phagocytosis， antibacterial agents and plant hormones， and improvement of soil physicochemical properties. However，multiple factors such as soil physicochemical status， soil biological properties， plant types， root exudates differences， PGPR compositions， inoculation methods，and climatic conditions would affct the application efect of PGPR.Future research should focus on optimizing these critical factors， in order to maximize the effects of PGPR inoculants. In particular， attention should be paid to screening and cultivating more PGPR strains with strong adaptability and stress tolerance， improve the inoculation technology， optimize the soil environment， regulate the competitive microbial community， clarify the interaction mechanisms between PGPR and their hosts and apply them in practice， so as to further improve the application effect of PGPR。（剩余24260字）