This study was purposely designed to understand the effects of intercropping banana and sweet potato on soil microbial community. The research question addressed was what were the differences in population number, population diversity and dominant population of soil microorganisms between interplant bananas with sweet potatoes and banana monoculture. The Illumina MiSeq high-throughput sequencing technology was used to detect and analyse the population composition and structure of soil microorganisms in banana field. The results showed that from May to September, the number of soil bacterial population in intercropping sweet potato was 5.54-28.67% higher than that in monoculture, and the richness and diversity of the population were significantly or extremely significantly higher than that in monoculture. The number of dominant bacterial population was less than that in monoculture, and the relative abundance of non dominant population was 10.58 - 58.81% higher than that in monoculture. The number, abundance and diversity of soil fungal populations in intercropping were higher than those in monoculture. The intercropping of banana and sweet potato has a significant effect on regulating the composition structure of soil microbial population and improving the abundance and diversity of microbial population. There has a great significance to improve the micro ecological environment of banana root soil and promote the stable and sustainable development of banana industry.

中文翻译：

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香蕉园甘薯间作对土壤微生物种群多样性的影响

本研究旨在了解间作香蕉和红薯对土壤微生物群落的影响。研究问题是套种香蕉与甘薯和香蕉单作在种群数量、种群多样性和土壤微生物优势种群方面有何差异。利用Illumina MiSeq高通量测序技术对香蕉田土壤微生物种群组成和结构进行检测分析。结果表明，5-9月，间作甘薯土壤细菌种群数量比单作高5.54-28.67%，种群丰富度和多样性均显着或极显着高于单作。优势菌群数量少于单一培养，非优势菌群相对丰度比单一培养高10.58～58.81%。间作土壤真菌种群数量、丰度和多样性均高于单作。香蕉与甘薯间作对调节土壤微生物种群组成结构、提高微生物种群丰度和多样性具有显着效果。对改善香蕉根系土壤微生态环境，促进香蕉产业稳定可持续发展具有重要意义。间作土壤真菌种群丰度和多样性均高于单作。香蕉与甘薯间作对调节土壤微生物种群组成结构、提高微生物种群丰度和多样性具有显着效果。对改善香蕉根系土壤微生态环境，促进香蕉产业稳定可持续发展具有重要意义。间作土壤真菌种群丰度和多样性均高于单作。香蕉与甘薯间作对调节土壤微生物种群组成结构、提高微生物种群丰度和多样性具有显着效果。对改善香蕉根系土壤微生态环境，促进香蕉产业稳定可持续发展具有重要意义。