Analysis of the potential of Polygonatum sibiricum rotation to improve soil microbi-al community and alleviate continuous cropping obstacle of Panax notoginseng
In order to explore the influence of Polygonatum sibiricum rotation on the soil microbial community of Panax notoginseng,evaluate the restoration ability of crop rotation and natural restoration.The influence of Polygonatum sibiricum rotation on the microbial structure and microflora change of soil continuous cropping with Panax notoginseng was studied.The results showed that seedling rate was 88.33％,significantly higher than the incidence rate of fallow treatment,which was less than 20％,but the difference was not significant.The diversity of soil fungi and bacteria was significantly reduced(P＜0.01).The results showed that crop rotation could signi-ficantly affect the β diversity of soil fungi and bacteria in Panax notoginseng(P＜0.001),and could significantly increase the relative abundance of Ascomycota and reduce the relative abundance of Basidiomycota and Triguta.Firmicutes,Budlesomonas,Chloritans,Acinetobacter,Bacteroidetes,etc.LEfSe results showed that after the rotation of the pathogens,Fusarium,Ilyonectria,and other fungi.Rhizosphere soil microbial fungi mainly sa-prophytic,pathological and mixed nutrition mode,after the rotation treatment,plant pathogen fungi abundance,pathogenic bacteria of decline,associated with the disease,at the same time after rotation bacterial L-valine bio-synthesis pathway,L-isoleucine biosynthesis Ⅰ(from threonine)pathway,L-isoleucine biosynthesis Ⅱ,Aerobic respiration Ⅰ(cytochrome C)pathway is significantly lower.The rotation of Polygonatum sibiricum can improve soil microorganisms and it's potential to alleviate the obstacles of Panax notoginseng.
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