生态环境学报2024，Vol.33Issue(7)：1048-1062,15.DOI:10.16258/j.cnki.1674-5906.2024.07.006
滨海盐碱地苜蓿-小黑麦轮作对土壤细菌和真菌群落多样性与网络结构的影响
The Effects of Alfalfa-Triticale Rotation on Soil Bacterial and Fungal Community Diversity and Co-occurrence Network in Coastal Saline-Alkaline Soil
摘要
Abstract
Incorporating legumes into crop rotations not only promotes sustainable ecosystem development,but also provides a key way to increase crop yields,especially in low-input and low-diversity agricultural systems.However,the effects of legume inclusion on the soil microbial communities remain unclear.In this study,the responses of soil bacterial and fungal community structures and co-occurrence network patterns in winter triticale-summer maize(MT)and alfalfa-winter triticale(AT)rotations were investigated using high-throughput sequencing technology in a typical coastal saline-alkali land.The results showed that AT had little effect on bacterial community diversity but decreased fungal richness due to soil nitrogen and phosphorus changes.Non-metric multidimensional scaling(NMDS)analysis showed that AT altered the fungal community structure,but not the bacterial community structure,which was associated with pH and soil organic carbon differences.Network analysis showed that AT increased the complexity and stability of the bacterial network structure,including an increase in nodes and links,average degree,keystone nodes,and negative links as well as a decrease in average path distance,but decreased the complexity and stability of the fungal network structure.This highlights that the contrasting responses of the bacterial and fungal communities to legume inclusion should be considered when exploring the effects of legume-based rotation on the soil microbial community.关键词
豆科作物/轮作/土壤微生物/多样性/群落结构/网络分析Key words
legumes/rotation/soil microbial community/diversity/structure/network analysis分类
农业科技引用本文复制引用
张京磊,王国良,吴波,贾春林,张进红,周圆,马冰..滨海盐碱地苜蓿-小黑麦轮作对土壤细菌和真菌群落多样性与网络结构的影响[J].生态环境学报,2024,33(7):1048-1062,15.基金项目
滨海盐碱地智慧生态农业技术模式集成与示范(2023YFD2001405) （2023YFD2001405）
东营市盐碱地综合利用专项(2023YJDZX06) （2023YJDZX06）
山东省科技型中小企业创新能力提升工程项目(2023TSGC0046) （2023TSGC0046）
山东省农业科学院农业科技创新工程(CXGC2024F12) （CXGC2024F12）
国家牧草产业技术体系(CRAS-34) （CRAS-34）
