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Characteristics of Bacterial Community Structure in Yellow Paddy Soil After Long-Term Chemical Fertilisation, Organic Fertilisation, and Fertilisation Mode Conversion

文献类型： 外文期刊

作者： Yang, Yehua 1 ; Huang, Xingcheng 1 ; Zhu, Huaqing 1 ; Liu, Yanling 1 ; Zhang, Yarong 1 ; Zhang, Song 3 ; Xiong, Han 1 ; Yang, Huan 1 ; Li, Yu 1 ;

作者机构： 1.Guizhou Acad Agr Sci, Inst Soil & Fertilizer, Guiyang 550006, Peoples R China

2.Minist Agr, Sci Observing & Expt Stn Arable Land Conservat & A, Guiyang 550006, Peoples R China

3.Guiding Agr & Rural Bur, Guiding 551300, Peoples R China

关键词： yellow paddy soil; chemical fertiliser; organic fertiliser; bacteria; influencing factors

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 3 期

页码：

收录情况： SCI

摘要： This study aimed to compare bacterial community structure differences in yellow paddy soil under long-term chemical/organic fertilisation and fertiliser conversion to guide farmland fertilisation strategies in yellow loam areas. Treatments included (1) continuous application of chemical fertilisers for 27 years (CF-CF); (2) application of chemical fertiliser continuously for 24 years and then application of organic fertiliser for 3 years (CF-OF); (3) continuous application of organic fertiliser for 27 years (OF-OF); and (4) application of organic fertiliser continuously for 24 years and then application of chemical fertiliser for 3 years (OF-CF). The results show that long-term fertilisation alters genus-level bacterial taxa, while fertilisation mode changes significantly increase taxa quantities at both phylum and genus levels. Different fertilisation treatments affect the relative abundance of bacteria; the relative abundance of Firmicutes in OF-OF is significantly greater than that in CF-CF, while Gemmatimonadota and Patescibacteria show the opposite trend. Compared to CF-CF, CF-OF increases the relative abundance of Firmicutes and decreases that of Cyanobacteria, whereas OF-CF increases the relative abundance of Firmicutes compared to OF-OF. Notably, Patescibacteria is significantly enriched in CF-CF, while Cyanobacteria and Bacteroidota are significantly enriched in CF-OF, and Firmicutes and Myxomycophyta are significantly enriched in the OF-OF treatment. The bacterial community composition of CF-CF and CF-OF is similar, while the bacterial community composition of OF-OF and OF-CF is similar. In bacterial assembly processes, OF-CF improves the heterogeneous selection process and reduces the homogeneous dispersal process compared to OF-OF. The bacterial assembly process of OF-CF gradually becomes similar to that of CF-CF and CF-OF. Further analyses indicate that fertilisation influences the soil bacterial community composition by affecting total nitrogen, organic matter, available phosphorus, and pH. Overall, long-term different fertilisation predominates bacterial community distribution, while short-term changes in fertilisation mode have a smaller but significant effect on bacterial community distribution, influencing the quantity and relative abundance of bacterial taxa; the application of organic fertilisers is more beneficial for the even distribution of bacteria.

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