黄芪根部病害研究现状及绿色防控策略OA

Astragalus is a genus of commonly used bulk medicinal herbs in China.As market demand continue to grow,the cultivation area of Astragalus has continuously expanded.Driven by multiple factors including excessive irrigation and fertilization in the production areas,long-term continuous cropping under a single planting pattern,and the frequent emergence of extreme weather events resulted from global climate change,the incidence and severity of Astragalus diseases,especially soil-borne diseases such as root rot,Verticillium wilt,and damping-off,have been intensifying year by year.These diseases have become major constrains on the yield and quality of Astragalus.Among them,root rot and Verticillium wilt are the main obstacles to continuous cropping of Astragalus,seriously restricting the sustainable development of the Astragalus planting industry.This article mainly summarizes the regional differences of pathogens associated with three main root diseases of Astragalus,the relationships between rhizosphere microorganisms and root diseases,as well as research advances in biocontrol technologies.Subsequently,it analyzes the key problems encountered in improving early disease diagnosis,disease monitoring,and green control technologies.Furthermore,this article proposes that in the future,new technologies including molecular biology,multi-omics,and machine learning should be fully utilized to conduct research on pathogen-host-environment interactions,exploration and utilization of new disease-resistant germplasm resources,monitoring of disease prevalence,and regulation of soil microecology.This review aims to provide a reference for improving the integrated prevention and control technology of regional root diseases of Astragalus and ensuring the efficient and green development of the Astragalus planting industry.