Study on the Regulation of Exogenous Fulvic Acid on Rhizosphere Microbial Community Structure and Nitrogen Metabolism Function in Soybeans after Waterlogging

Soybean plants from the first flowering stage to the grain drum stage were treated with fulvic acid for five days, and the soybean rhizosphere soil before treatment and at the grain drum stage was subjected to microbial metagene sequencing to study whether fulvic acid could alleviate waterlogging stress at the soil microbial level