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Manure and mineral fertilization change enzyme activity and bacterial community in millet rhizosphere soils

文献类型: 外文期刊

作者: Xu, Lixia 1 ; Yi, Min 1 ; Yi, Huilan 1 ; Guo, Erhu 3 ; Zhang, Aiying 3 ;

作者机构: 1.Shanxi Univ, Sch Life Sci, Taiyuan 030006, Shanxi, Peoples R China

2.Shanxi Pharmaceut Vocat Coll, Dept Tradit Chinese Pharm, Taiyuan 030031, Shanxi, Peoples R China

3.Shanxi Acad Agr Sci, Inst Millet Crops, Changzhi 046011, Peoples R China

关键词: 16S rDNA;Rhizosphere bacterial community;Different fertilizations;Soil properties;Soil enzyme activities

期刊名称:WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY ( 影响因子:3.312; 五年影响因子:3.58 )

ISSN: 0959-3993

年卷期: 2018 年 34 卷 1 期

页码:

收录情况: SCI

摘要: Fertilization is a key agricultural practice for increasing millet yields and influencing soil properties, enzyme activities and rhizosphere bacterial communities. High throughput Illumina sequencing of the 16S rDNA was applied to compare the bacterial community structures and diversities among six different soil samples. The experiments involved the following: no fertilizer (CK), phosphate (P) and potassium (K) plus organic manure (M) (PKM), nitrogen (N) and K plus M (NKM), NPM, NPK and NPKM fertilization. The results showed that the NPKM fertilization of the millet field had a maximal yield of 3617 kg ha(-1) among the six different treatments. The abundances of the Actinobacteria and Bacteroidetes phyla, especially the Devosia, Mycobacterium, Opitutus and Chitinophaga genera, were higher in NPKM than those in the other samples. Redundancy analysis showed that the soil organic matter (SOM), available phosphorus (AP), and urease (UR) activity were significantly correlated with bacterial communities, while SOM and AP were strongly correlated with soil enzyme activities. Pearson's correlation showed that the available nitrogen was strongly correlated with Devosia and Mycobacterium, and SOM was strongly correlated with Opitutus and Chitinophaga. Besides, catalase was significantly related to Iamia, the UR was significantly related to Devosia, phosphatase was significantly related to Luteimonas and Chitinophaga. Based on the soil quality and millet yield, NPKM treatment was a better choice for the millet field fertilization practices. These findings provide a better understanding of the importance of fertilization in influencing millet yield, soil fertility and microbial diversity, and they lead to a choice of scientific fertilization practices for sustainable development of the agroecosystem.

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