QI Guochao,WANG Lina,JIANG Zeyu,et al.Influences of Continuous Cropping and Rotation on Rhizosphere Soil Bacterial Microecology of Soybean and Maize[J].HEILONGJIANG AGRICULTURAL SCIENCES,2026,(05):1-8.[doi:10.11942/j.issn1002-2767.2026.05.0001]
连作与轮作对大豆和玉米根际土壤细菌微生态的影响
- Title:
- Influences of Continuous Cropping and Rotation on Rhizosphere Soil Bacterial Microecology of Soybean and Maize
- 文章编号:
- 1
- Keywords:
- high-throughput sequencing; planting system; community structure; abundance; environmental factor
- 文献标志码:
- A
- 摘要:
- 为促进作物土壤优化并提高作物产品质量,采用传统微生物培养技术与Illumina MiSeq高通量测序技术相结合,研究不同种植制度下大豆、玉米根际土壤细菌的群落结构组成、丰度变化、菌群分布与土壤环境因子的相关性。结果表明,长期大豆连作、玉米连作、豆玉轮作种植模式下细菌群落多样性表现为大豆连作>玉米连作>豆玉轮作;细菌群落丰富度表现出大豆连作>玉米连作>豆玉轮作;大豆连作、玉米连作、豆玉轮作土壤细菌群落在门水平上菌群结构基本一致,优势菌门主要为酸杆菌门(Acidobacteriota 17.25%~32.14%)、变形菌门(Proteobacteria 19.25%~24.42%)、拟杆菌门(Bacteroidota 9.58%~18.73%),但豆玉轮作中变形菌门相对丰度(24.40%)、拟杆菌门相对丰度(18.76%)明显高于大豆连作相对丰度(19.41%)和玉米连作相对丰度(19.32%),而酸杆菌门相对丰度(17.27%)明显低于大豆连作相对丰度(29.09%)和玉米连作相对丰度(32.07%);土壤速效钾含量是影响优势菌群酸杆菌门、变形菌门、拟杆菌门群落分布的主要环境因子。综上,大豆连作会提高细菌多样性和丰富度,可通过调节速效钾含量改变微生物的群落结构。
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备注/Memo
收稿日期:2026-03-09
