Influence mechanisms of long-term fertilizations on the mineralization of organic matter in Ultisol

•Fertilizations stimulated the mineralization of SOM in Ultisol.•Fertilizations increased the quantity and quality of SOM and hydrolase activity.•Fertilizations increased the relative abundance of dominant microbial phyla.•Fertilizations stimulated SOM mineralization mainly by increasing hydrolase a...

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Bibliographic Details
Published in:Soil & tillage research 2020-07, Vol.201, p.104594, Article 104594
Main Authors: Xu, Peidong, Liu, Yurong, Zhu, Jun, Shi, Lei, Fu, Qingling, Chen, Jiazhou, Hu, Hongqing, Huang, Qiaoyun
Format: Article
Language:English
Subjects:
Enzyme activity
Fe/Al oxides
Long-term fertilizations
Microbial community
Mineralization
Soil organic matter
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Summary:•Fertilizations stimulated the mineralization of SOM in Ultisol.•Fertilizations increased the quantity and quality of SOM and hydrolase activity.•Fertilizations increased the relative abundance of dominant microbial phyla.•Fertilizations stimulated SOM mineralization mainly by increasing hydrolase activity. The influence mechanisms of long-term fertilizations with chemical fertilizer (NPK), a mixture of chemical fertilizer and straw (NPKS), animal manure (AM), and no fertilizer (Ck) on the mineralization of soil organic matter (SOM) in an Ultisol was studied in this study. The cumulative amount and rate of SOM mineralization were stimulated by the examined fertilizations, especially AM treatment. The order Ck ≤ NPK 
ISSN:0167-1987
1879-3444
DOI:10.1016/j.still.2020.104594