抄録
The screening and analysis of growth-promoting mechanisms of core rhizosphere strains in salt-alkali tolerant rice are crucial for enhancing rice tolerance to saline-alkali stress, optimizing saline-alkali soil environments, and promoting sustainable agriculture. This study explores the screening methods of salt-alkali tolerant plant growth-promoting bacteria, with a particular focus on the application of multi-omics technologies, including metagenomics, transcriptomics, and metabolomics, in core strain selection and functional analysis. The study reveals the mechanisms by which these strains promote rice growth and alleviate saline-alkali stress through nitrogen fixation, phosphorus solubilization, plant hormone synthesis, and exopolysaccharide production. Furthermore, based on field trial progress, the study evaluates the application potential of core strains in saline-alkali rice cultivation and discusses strategies for symbiotic enhancement using synthetic microbiomes, as well as optimization schemes for biofertilizer application to improve strain colonization and growth-promoting effects in the field. These findings provide theoretical support for the development of salt-alkali tolerant microbial fertilizers and offer a scientific basis for rice cultivation in saline-alkali soils and the sustainable development of ecological agriculture.
