| 柠条堆肥与耕作深度对连作黄瓜土壤细菌群落组成与代谢功能的影响 |
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| 引用本文： | 张凯歌,兰挚谦,付玉芳,王晓卓,张雪艳.柠条堆肥与耕作深度对连作黄瓜土壤细菌群落组成与代谢功能的影响[J].植物营养与肥料学报,2022,28(3):460-469. |
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| 作者姓名： | 张凯歌 兰挚谦 付玉芳 王晓卓 张雪艳 |
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| 作者单位： | 宁夏大学农学院，宁夏银川 750021 |
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| 基金项目： | 国家自然科学基金项目(31760593，32060713)；宁夏园艺西部一流学科项目(NXYLXK2017B03)；宁夏十三五重点研发项目(2016BZ0902)，宁夏科技创新领军项目(KJT2017001)；宁夏大学贺兰山学者(2020)。 |
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| 摘 要： | 目的]研究柠条堆肥结合不同翻耕深度下土壤细菌群落变化特征及其关键影响因素,为西北地区农业废弃资源利用及设施农田土壤健康可持续生产提供理论依据.方法]田间试验始于2018年,在日光温室连续进行4茬,共设5个处理:传统鸡粪+翻耕15?cm?(CK)、柠条堆肥+免耕(T0)、柠条堆肥+翻耕15?cm?(T15)、柠条堆肥...
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| 关 键 词： | 柠条堆肥 耕作深度 细菌群落结构 代谢功能 |
| 收稿时间： | 2021-08-20 |
Effects of Caragana compost and tillage depth on bacterial community composition and metabolic functions in continuous cucumber soils |
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| ZHANG Kai-ge,LAN Zhi-qian,FU Yu-fang,WANG Xiao-zhuo,ZHANG Xue-yan.Effects of Caragana compost and tillage depth on bacterial community composition and metabolic functions in continuous cucumber soils[J].Plant Nutrition and Fertilizer Science,2022,28(3):460-469. |
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| Authors: | ZHANG Kai-ge LAN Zhi-qian FU Yu-fang WANG Xiao-zhuo ZHANG Xue-yan |
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| Institution: | School of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: | 【Objectives】 We studied the effects of Caragana compost combined with different tillage depths on soil bacterial community and key environmental factor for soil quality. We aimed to provide a theoretical basis for utilising agricultural waste resources and sustainable greenhouse production in northwest China. 【Methods】 A field experiment was conducted in a solar greenhouse in 2018 with five treatments across four successive cropping seasons. The treatments include traditional chicken manure with tillage depth of 15 cm (CK), Caragana compost with no-tillage (T0), and with tillage depth of 15 cm (T15), 35 cm (T35), and 45 cm (T45). Soil samples were collected at 0–20 cm to determine soil nutrient characteristics and bacterial community structure. 【Results】 Compared with traditional chicken manure, Caragana compost treatment did not reduce cucumber yield. Increasing tillage depth combined with Caragana compost application could alleviate soil acidification and secondary salinization. Conversely, no-tillage (P<0.05) increased available N accumulation and decreased soil C/N ratio. The Caragana compost was the leading factor of bacterial community change, followed by the tillage depth. Compared with CK treatments, T15, T35 and T45 treatment significantly increased the Shannon and Simpson diversity index and Pielou evenness index. The relative abundance of Chloroflexi and Gemmatimonadetes under Caragana compost increased with increasing tillage depth. The relative abundance of Actinobacteria and Firmicutes increased in no-tillage. Compared with T0, deep tillage (T35 and T45) significantly reduced the utilization of amino acids, amines, and aromatic compounds, and T45 significantly increased the utilization of carboxylic acids. The KEGG annotation results showed that T35 promoted bacterial community metabolism and genetic information processing. The RDA results showed that soil pH, EC, and available N all had a direct or indirect (P<0.05) impact on the structure and function of the bacterial community. Soil pH was the dominant factor, and the decrease of pH was adverse to increasing soil bacteria's construct and functional diversity. 【Conclusions】 Caragana compost with suitable deep tillage (T35) effectively promotes the construct and functional diversity of soil bacterial communities, conducive to the sustainable development of farmland soil ecosystems, in spite of the smaller adverse yield effect. |
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