[1]于雪娇,胡冰洁,袁宏,等.氨基酸增值尿素对水稻生长和根系分泌物的影响[J].江苏农业学报,2023,(09):1834-1842.[doi:doi:10.3969/j.issn.1000-4440.2023.09.005]
　YU Xue-jiao,HU Bing-jie,YUAN Hong,et al.Effects of amino acid value-added urea on rice growth and root exudates[J].,2023,(09):1834-1842.[doi:doi:10.3969/j.issn.1000-4440.2023.09.005]
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氨基酸增值尿素对水稻生长和根系分泌物的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2023年09期
页码:
1834-1842
栏目:
耕作栽培·资源环境
出版日期:
2023-12-31

文章信息/Info

Title:
Effects of amino acid value-added urea on rice growth and root exudates
作者:
于雪娇; 胡冰洁; 袁宏; 叶文玲; 张国漪
(安徽农业大学资源与环境学院,安徽合肥230001)
Author(s):
YU Xue-jiao; HU Bing-jie; YUAN Hong; YE Wen-ling; ZHANG Guo-yi
(College of Resources and Environment, Anhui Agricultural University, Hefei 230001, China)
关键词:
氨基酸增值尿素; 水稻; 微生物群落; 有机酸
Keywords:
amino acid value-added urea; rice; microbial community; organic acids
分类号:
S511
DOI:
doi:10.3969/j.issn.1000-4440.2023.09.005
文献标志码:
A
摘要:
水稻是中国最重要的粮食作物之一,合理施用氮肥对提高水稻产量至关重要。本研究以氨基酸增值尿素为试验材料,以水稻为研究对象,分析氨基酸增值尿素对水稻生长、根际微生物和根系分泌有机酸的影响。结果表明,与单施尿素处理相比,施用氨基酸增值尿素处理能够促进水稻生长,根体积和根尖数分别提高了25.28%和16.94%。不同施肥处理下根际土壤优势菌群的相对丰度存在差异,与单施尿素处理相比,施用氨基酸增值尿素处理的Proteobacteria、Bacteroidetes、Firmicutes的相对丰度增加,Acidobacteria的相对丰度下降,Sphingomonas相对丰度增加。在优势菌群多样性方面,氨基酸增值尿素处理的Chao1指数高于其他处理。与单施尿素处理相比,施用氨基酸增值尿素处理的水稻根系分泌的有机酸中草酸、乙酸占比减少,酒石酸占比增加。相关性分析发现,Bacteroidetes、Firmicutes、Proteobacteria的相对丰度与丁二酸含量、酒石酸含量呈正相关。综上所述,氨基酸增值尿素可以促进水稻生长、根系有机酸分泌,改变根际土壤菌群多样性。
Abstract:
Rice is one of the most important food crops in China, and reasonable application of nitrogen fertilizer is very important to improve rice yield. In this study, amino acid value-added urea was used as the experimental material, and rice was taken as the research object to analyze the effects of amino acid value-added urea on rice growth, rhizosphere microorganisms and organic acid secretion in roots. Compared with single urea treatment, the application of amino acid value-added urea could promote the growth of rice, and the root volume and the number of root tips were increased by 25.28% and 16.94%, respectively. The relative abundance of dominant bacteria in rhizosphere soil was different under different fertilization treatments. Compared with urea treatment, the relative abundance of Proteobacteria, Bacteroidetes and Firmicutes increased, the relative abundance of Acidobacteria decreased, and the relative abundance of Sphingomonas increased in the treatment of amino acid value-added urea. In terms of the diversity of dominant bacteria, the Chao1 index of amino acid value-added urea treatment was higher than that of other treatments. Compared with single urea treatment, the proportion of oxalic acid and acetic acid in amino acid value-added urea treatment decreased, and the proportion of tartaric acid increased. Correlation analysis results showed that the relative abundance of Bacteroidetes, Firmicutes and Proteobacteria was positively correlated with succinic acid content and tartaric acid content. In summary, amino acid value-added urea can promote rice growth, root organic acid secretion, and change the diversity of bacteria in rhizosphere soil.

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备注/Memo

备注/Memo:
收稿日期:2023-02-12基金项目:安徽省教育厅科研项目(KJ2021A0138)作者简介:于雪娇(1998-),女,江苏南京人,硕士研究生,主要从事植物营养学研究。(E-mail)2421564611@qq.com通讯作者:张国漪,(E-mail)2012034@ahau.edu.cn
更新日期/Last Update: 2024-01-15