Effects of Film Mulching on Enzyme Activity and Microbial Diversity in Rhizosphere Substrate of Potted Tree Peony
Film mulching can change the enzyme activity and microbial community structure in plant rhi-zosphere soil.Using high throughput sequencing and bioinformatics analysis,the changes of enzyme activity and microbial diversity in the rhizosphere substrate of potted tree peony with and without film mulching in spring and summer were measured and analyzed in this study.The results indicated that film mulching signifi-cantly increased the enzyme activity in the rhizosphere substrate of potted tree peony,and the change of neu-tral phosphatase activity was the most significant,followed by urease activity.Film mulching altered the struc-ture and composition of microbial community,as well as the relative abundance of dominant bacteria.The rela-tive abundance of Gemmatimonadota and Proteobacteria increased,and that of Faecalibacterium and Bacte-roides changed.The film mulching treatment increased the alpha diversity of rhizosphere microbial community,and the Simpson and Shannon indexes were higher than those without film mulching,but film mulching in summer decreased the relative abundance of microbial community.Season had great influence on beta diversity of the microbial community,and film mulching had the potential to affect the distance between bacteria.The results provided an essential reference for further research on effects of film mulching on micro-ecological envi-ronment of potted tree peony,and also provided theoretical foundations for application of film mulching tech-nology in production of potted tree peony.
Film mulchingPotted tree peonyRhizosphere substrateEnzyme activityMicrobial diversity
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