| 强还原处理配施枯草芽孢杆菌对百合土壤酚酸的影响 |
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| 引用本文： | 夏青,刘子豪,张晶清,林于蓝,曾粮斌,张金波,蔡祖聪,赵军.强还原处理配施枯草芽孢杆菌对百合土壤酚酸的影响[J].土壤,2023,55(5):1016-1024. |
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| 作者姓名： | 夏青 刘子豪 张晶清 林于蓝 曾粮斌 张金波 蔡祖聪 赵军 |
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| 作者单位： | 南京师范大学地理科学学院,南京师范大学地理科学学院,南京师范大学地理科学学院,南京师范大学地理科学学院,中国农业科学院麻类研究所,南京师范大学地理科学学院,南京师范大学地理科学学院,南京师范大学地理科学学院 |
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| 基金项目： | (42090065, 42077031, U21A20226)、中国农业科学院科技创新工程(ASTIP-IBFC)和江苏省研究生科研与实践创新项目(KYCX22_1569, KYCX22_1568)资助。 |
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| 摘 要： | 为研究不同有机物料强还原土壤处理(Reductive Soil Disinfestation, RSD)及枯草芽孢杆菌施用对土壤酚酸类物质的影响，以龙牙百合栽培土壤为研究对象，采用裂区试验设计，主区设置对照(CK)和以制糖发酵废液(MO)、植物残渣(SB)为主要有机物料的RSD处理，并于再植龙牙百合出苗后裂区添加枯草芽孢杆菌Y25(CK＿Y25、MO＿Y25、SB＿Y25)，分别在RSD处理后及龙牙百合生长期和收获期采集土壤样品，分析土壤中酚酸类物质的组成和含量变化。结果表明：与CK相比，SB处理显著(P<0.05)增加了土壤中丁香酸、对香豆酸、阿魏酸和总酚酸的含量，改变了土壤酚酸谱特征，而MO处理对土壤酚酸组成和含量的影响均不显著。龙牙百合再植能够提高RSD处理土壤中酚酸类物质含量，但不同处理随种植时间延长而呈现不同的变化规律。此外，添加枯草芽孢杆菌Y25能显著(P<0.05)降低SB处理土壤中酚酸类物质的含量(总酚酸降解率≥30%)，其中对香豆酸和阿魏酸在龙牙百合生长期和收获期的降解率分别高达39.2%～47.8%和32.3%～36.7%。本研究发现，以植物残渣为有机物...
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| 关 键 词： | 植物残渣 土壤酚酸 强还原土壤处理 枯草芽孢杆菌 龙牙百合 |
| 收稿时间： | 2022/10/20 0:00:00 |
| 修稿时间： | 2023/1/29 0:00:00 |
Effects of Reductive Soil Disinfestation and Bacillus subtilis Inoculant on Soil Phenolic Acids of Lily |
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| XIA Qing,LIU Zihao,ZHANG Jingqing,LIN Yulan,ZENG Liangbin,ZHANG Jinbo,CAI Zucong,ZHAO Jun.Effects of Reductive Soil Disinfestation and Bacillus subtilis Inoculant on Soil Phenolic Acids of Lily[J].Soils,2023,55(5):1016-1024. |
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| Authors: | XIA Qing LIU Zihao ZHANG Jingqing LIN Yulan ZENG Liangbin ZHANG Jinbo CAI Zucong ZHAO Jun |
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| Institution: | School of Geography, Nanjing Normal University,School of Geography, Nanjing Normal University,School of Geography, Nanjing Normal University,School of Geography, Nanjing Normal University,Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences,School of Geography, Nanjing Normal University,School of Geography, Nanjing Normal University,School of Geography, Nanjing Normal University |
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| Abstract: | Phenolic acid is one of the major allelochemicals that may exhibit negative effects on the growth of various plant species. Reductive soil disinfestation (RSD) is an effective agriculture practice to remediate degraded soils, which relies on the incorporation of a large amount of organic materials such as plant residues. However, plant residues are often rich in phenolic acids, and the effects of RSD incorporated with plant residues on soil phenolic acids are still unclear. In addition, Bacillus subtilis is often reported to have phenolic acid-degradation capability. Therefore, this study was oriented to clarify the effects of RSD incorporated with different organic materials and B. subtilis inoculant on soil phenolic acids. A field experiment, designed to have three soil treatments, i.e., CK (control without soil treatment), MO (RSD incorporated with 6 t/hm2 fermentation waste liquid from sugar industry), SB (RSD incorporated with 15 t/hm2 plant residues), were performed on Longya Lily cultivated soils in Yuanjiang City, Hunan Province. Each soil treatment was subsequently split into two sub-plots for the inoculation of B. subtilis Y25 (CK_Y25, MO_Y25, SB_Y25) after replanted Lily emergence. Soil samples were collected at post-RSD treatment, growth and harvest stages of replanted Lily, and High Performance Liquid Chromatography (HPLC) was used to analyze the soil phenolic acids. Results showed that SB significantly (P < 0.05) altered soil phenolic acids patterns, and increased the contents of syringic acid, p-coumaric acid, ferulic acid and total phenolic acids as compared to CK, while MO treatment had no remarkable effect (P > 0.05) on the composition and content of soil phenolic acids. The contents of phenolic acids in the RSD-treated soils were increased by Longya Lily replantation, but the MO and SB treatments showed different dynamic patterns with the growth of replanted Lily. B. subtilis Y25 inoculant could effectively (P < 0.05) reduce the content of phenolic acids in SB-treated soil, with the degradation rate being higher than 30%. In particular, the degradation rates of p-coumaric acid and ferulic acid were as high as 39.2-47.8% and 32.3-36.7% at the growth and harvest stages of replanted Lily, respectively. In conclusion, RSD treatment with plant residues as organic materials could increase the content of soil phenolic acids, while the introduction of exogenous microorganism with phenolic acid-degradation function could be used as an effective supporting measure to reduce soil phenolic acids after reductive soil disinfestation. |
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| Keywords: | Plant residues Soil phenolic acids Reductive soil disinfestation Bacillus subtilis Longya Lily |
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