Plant soil negative feedback phenomena, such as continuous cropping obstacles, can lead to frequent diseases and decreased quality of medicinal plants. Rhizosphere microorganisms are important participants in the process of negative feedback between medicinal plants and soil. Therefore, elucidating the relationship between microorganisms and plants is crucial for clarifying the mechanism of negative feedback between medicinal plants and soil and solving continuous cropping obstacles. This article discusses the regulatory mechanism of the metabolism of root exudates of medicinal plants under continuous cropping conditions on the rhizosphere microbiota, as well as the formation mechanism of continuous cropping obstacles mediated by rhizosphere microbiota in the negative feedback between medicinal plants and soil. It clarifies the core regulatory role of rhizosphere microbiota in the feedback between medicinal plants and soil, as well as its correlation with the formation of continuous cropping obstacles. Taking plant soil feedback as the starting point, it further explores the plant soil microbial interaction system. It is proposed to slow down the negative feedback effect of plant soil from the aspects of improving planting mode, exploring molecular mechanism, biological pest control, etc., in order to provide theoretical support for solving the obstacles of continuous cultivation of medicinal plants.

medicinal plants  /  rhizosphere microorganisms  /  root exudates  /  plant-soil negative feedback  /  continuous cropping obstacle