[Research progress on role of ginsenosides-mediated rhizosphere microecological succession in formation of continuous cropping obstacles of Panax ginseng].

The frequent occurrence of continuous cropping obstacles has become a major constraint on the sustainable development of the Panax ginseng industry. As the characteristic secondary metabolites of P. ginseng, ginsenosides are released by plants into the soil and can persist in the soil environment through physical adsorption, microbial transformation and other processes, thereby exerting a sustained regulatory effect on the composition of rhizosphere microbial communities. Taking ginsenoside-mediated rhizosphere microecological succession as the core thread, this paper systematically expounded the rhizosphere release characteristics of ginsenosides and their transformation and persistence rules in soil, analyzed the intrinsic processes by which ginsenosides shaped pathogen-dominated rhizosphere microbial communities through group-specific selection and further mediated the gradual succession of rhizosphere microecology from a disease-suppressive state to a disease-conducive state, and clarified the inherent correlation between rhizosphere microecological imbalance and the formation of continuous cropping obstacles in P. ginseng. In addition, a three-stage microecological intervention strategy of "reset-reconstruction-stabilization" was proposed, aiming to provide theoretical references and practical insights for the ecological prevention and control of continuous cropping obstacles in P. ginseng.