中国农学通报2025，Vol.41Issue(31)：60-71,12.
基于根袋法的不同木薯品种根际微生态差异研究
Rhizosphere Microecological Difference of Different Cassava Cultivars Based on Root Bag Method
摘要
Abstract
In order to investigate the dynamic changes of rhizosphere soil bacterial communities in different cassava cultivars,the contents of available N(AN),available P(AP),available K(AK)and microbial communities in rhizosphere soil of'SC205','GR10'and'SC9'were studied by root bag method at 39,75 and 115 days after planting.The results showed that:(1)there were significant differences in the content of available nutrients among the three cultivars at different sampling times,with only AK content showing significant differences among cultivars at 39 days after planting.(2)There were significant differences in the richness and diversity of rhizosphere soil bacteria among different cultivars and sampling periods,and the richness and diversity of bacteria increased with the passage of sampling time.(3)The rhizosphere soil of'SC205'was enriched in Proteobacteria-Alphaproteobacteria and Gammaproteobacteria,Bacteroidota-Bacteroidia at 75 and 115 days after planting,the rhizosphere soil of'SC205'was enriched in Gammaproteobacteria at 39 days after planting,and the rhizosphere soil of'GR10'was enriched in Actinobacteriota at 75 and 115 days after planting.(4)The contents of AP and AN were positively correlated with the relative abundance of Proteobacteria and Bacteroidota,and negatively correlated with the relative abundance of Chloroflexi at 115 days after planting.AK content was positively correlated with the relative abundance of Actinobacteriota and Patescibacteria,and negatively correlated with the relative abundance of Acidobacteriota and WPS-2 at 115 days after planting.In summary,the microbial communities in the rhizosphere soil of'SC9','GR10'and'SC205'are mainly composed of eutrophic bacteria such as Proteobacteria,Chloroflexi and Bacteroidota.There are differences in the richness and diversity of rhizosphere bacteria among the three cultivars and seasonal variations.关键词
木薯品种/根际微生物/高通量测序/根际养分/根袋法Key words
cassava cultivars/rhizosphere microorganism/high-throughput sequencing/rhizosphere nutrient/root bag method分类
农业科技引用本文复制引用
赵鑫鑫,韦云东,周时艺,陈蕊蕊,李军,郑华..基于根袋法的不同木薯品种根际微生态差异研究[J].中国农学通报,2025,41(31):60-71,12.基金项目
国家木薯产业技术体系土肥水管理岗(CARS-11-GXLJ) （CARS-11-GXLJ）
广西农业科学院基本科研业务专项资助项目"木薯高产高效栽培技术团队"(桂农科2021YT150) （桂农科2021YT150）
广西农业科学院基本科研业务专项"广西木薯根系高效利用土壤钾素的机制研究"(桂农科2023YM121). （桂农科2023YM121）
