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应用生态学报 ›› 2022, Vol. 33 ›› Issue (11): 2954-2962.doi: 10.13287/j.1001-9332.202211.013

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不同轮作茬口土壤细菌群落及后茬小麦产量

靳海洋1, 岳俊芹1, 闫雅倩2, 张德奇1, 杨程1, 李向东1*, 邵运辉1, 方保停1   

  1. 1河南省农业科学院小麦研究所/农业农村部中原地区作物栽培科学观测实验站/河南省小麦产量-品质协同提升工程研究中心, 郑州 450002;
    2河南农业大学农学院/省部共建小麦玉米作物学国家重点实验室, 郑州 450002
  • 收稿日期:2022-01-06 修回日期:2022-08-30 出版日期:2022-11-15 发布日期:2023-05-15
  • 通讯作者: *E-mail: hnlxd@126.com
  • 作者简介:靳海洋, 男, 1991年生, 博士。主要从事作物栽培耕作与土壤生态功能研究。E-mail: jinhaiyang321@163.com
  • 基金资助:
    中原科技创新领军人才计划项目(224200510028)、中原青年博士后创新人才计划项目(ZYYCYU202012184)、国家重点研发计划项目(SQ2020YFF0426480)和河南省农业科学院科技创新团队项目(2022TD09)

Soil bacterial communities of different crop rotations and yield of succeeding wheat.

JIN Hai-yang1, YUE Jun-qin1, YAN Ya-qian2, ZHANG De-qi1, YANG Cheng1, LI Xiang-dong1*, SHAO Yun-hui1, FANG Bao-ting1   

  1. 1Wheat Research Institute, Henan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Crop Cultivation in Central Plain, Ministry of Agriculture and Rural Affairs/Henan Province Engineering Research Center of Wheat Yield-Quality Simultaneous Improvement, Zhengzhou 450002, China;
    2College of Agronomy, Henan Agricultural University/Co-construction State Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450002, China
  • Received:2022-01-06 Revised:2022-08-30 Online:2022-11-15 Published:2023-05-15

摘要: 评估不同轮作模式的生态可持续性和作物生产力,可为调整优化种植结构提供理论依据。设置7个不同轮作作物和周期茬口处理,采用实时荧光定量PCR技术测定不同轮作茬口的土壤细菌群落丰度,采用16S rRNA基因扩增子高通量测序技术分析土壤细菌群落多样性与物种组成,并测定土壤速效养分状况和后茬小麦产量。结果表明: 与夏玉米茬口相比,不同轮作周期夏花生或夏大豆茬口处理降低了土壤有机碳、无机氮和速效钾含量,显著增加了土壤有效磷含量。不同轮作周期夏花生或夏大豆茬口处理的土壤细菌16S rRNA基因拷贝数显著降低,而群落丰富度和多样性有所增加。不同轮作作物显著改变了土壤细菌群落结构和物种组成。与夏玉米茬口相比,不同轮作周期夏大豆茬口显著增加了后茬冬小麦籽粒千粒重和产量。综上,不同轮作周期夏花生或夏大豆茬口有利于增加土壤有效磷含量和细菌群落多样性,显著改变土壤细菌群落结构,其中,夏大豆茬口对后茬冬小麦产量形成具有积极作用。

关键词: 轮作, 土壤, 速效养分, 细菌群落, 产量

Abstract: Evaluating ecological sustainability and crop productivity of different crop rotation patterns could provide theoretical support for adjusting and optimizing crop planting structure. We set seven treatments with different rotation crops and periods. We used real-time quantitative PCR to determine the abundance of soil bacterial community and 16S rRNA gene amplicon high-throughput sequencing technology to analyze diversity and taxa composition of soil bacterial community. Both soil available nutrients and succeeding wheat yield were measured. The results showed that, compared with the rotation with summer maize, the rotations with summer peanut or soybean in diffe-rent periods reduced soil organic carbon, mineral nitrogen, and available potassium, but significantly increased soil available phosphorus. The 16S rRNA gene copy numbers of soil bacteria in the treatments of rotations with summer peanut or soybean in different periods were significantly decreased, while community richness and diversity were increased. Different rotation crops significantly changed the structure and taxonomic composition of soil bacterial community. Compared with the rotation with summer maize, the rotations with summer soybean in different periods significantly increased the 1000-grain weight and grain yield of succeeding winter wheat. In conclusion, rotations with summer peanut or soybean in different periods could increase soil available phosphorus content and bacterial diversity, and significantly change soil bacterial community structure. In particular, rotation with summer soybean performed best in promoting yield formation of succeeding winter wheat.

Key words: crop rotation, soil, available nutrient, bacterial community, yield