| 不同秸秆还田方式对旱地红壤细菌多样性及群落结构的影响 |
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| 引用本文： | 栾璐,郑洁,程梦华,胡凯婕,孔培君,蒋瑀霁,孙波.不同秸秆还田方式对旱地红壤细菌多样性及群落结构的影响[J].土壤,2021,53(5):991-997. |
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| 作者姓名： | 栾璐 郑洁 程梦华 胡凯婕 孔培君 蒋瑀霁 孙波 |
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| 作者单位： | 土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,南京师范大学生命科学学院,南京师范大学生命科学学院,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室中国科学院南京土壤研究所 |
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| 基金项目： | 国家自然科学(41922048,41771297)和江苏省杰出青年(BK20180049)资助。*通讯作者(yjjiang@issas.ac.cn) |
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| 摘 要： | 为明确不同秸秆还田方式下土壤细菌群落结构变化特征，以南方典型旱地红壤为研究对象，基于中国科学院鹰潭红壤生态实验站玉米单作系统不同秸秆还田方式的长期试验，利用高通量测序明确了不同秸秆还田方式对土壤细菌多样性及群落结构的影响。结果表明：1）秸秆还田对土壤肥力提升显著，以秸秆猪粪配施（NPKSM）提升效果最佳；2）常规化肥处理（NPK）对细菌多样性无显著影响，但秸秆还田（NPKS）、秸秆猪粪配施（NPKSM）以及生物质炭（NPKB）处理均显著提升土壤细菌多样性；3）速效磷（AP）和土壤有机碳（SOC）变化是影响细菌多样性指数的主要因素，而速效钾（AK）、pH、总磷（TP）以及总氮（TN）均显著驱动细菌群落结构变异。研究结果从培育红壤肥力与微生物多样性的角度，为农业生态系统生物功能和土壤健康的协同提升提供了科学依据。
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| 关 键 词： | 旱地红壤 秸秆还田 细菌多样性 细菌群落结构 |
| 收稿时间： | 2020/9/14 0:00:00 |
| 修稿时间： | 2020/10/20 0:00:00 |
Effects of Different Types of Straw Returning on Bacterial Diversity and Community Structure in Dryland Red Soil |
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| LUAN Lu,ZHENG Jie,CHENG Menghu,HU Kaijie,KONG Peijun,JIANG Yuji,SUN Bo.Effects of Different Types of Straw Returning on Bacterial Diversity and Community Structure in Dryland Red Soil[J].Soils,2021,53(5):991-997. |
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| Authors: | LUAN Lu ZHENG Jie CHENG Menghu HU Kaijie KONG Peijun JIANG Yuji SUN Bo |
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| Institution: | State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,College of Life Science,Nanjing Normal University,College of Life Science,Nanjing Normal University,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences |
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| Abstract: | The purpose of this study was to investigate the effects of different types of straw returning on the microbial community structure in a red soil. We conducted the field experiment with different types of straw returning in corn mono-cropping system at the National Agro-Ecosystem Observation and Research Station in Yingtan. The sequencing of 16S rRNA gene was used to investigate the effects of different types of straw returning on the diversity and structure of soil bacteria community. The results showed that: 1) the straw returning treatments (NPKS, NPKSM and NPKB) significantly promoted soil fertility, with the highest properties under the NPKSM treatment (straw plus pig manure) ; 2) the straw returning treatments significantly increased the bacterial diversity compared to the chemical fertilization treatment; and 3) available phosphorus and soil organic carbon were the two most important predictors of the bacterial diversity, while available potassium, pH, total phosphorus and total nitrogen were the significant predictors of the bacterial community structure. The results provide the scientific basis for the synergistic improvement of biological functions and soil health in agricultural ecosystem from the perspective of promoting soil fertility and microbial diversity. |
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| Keywords: | red soil straw returning bacterial diversity bacterial community structure |
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