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ABSTRACT
Meadow soils are one of the important agricultural soil types, biochar is a good soil amendment, whereas the studies on the effects of biochar additions on carbon and nitrogen contents, as well as bacterial communities of meadow soils, were seldom carried out. The effects of one nitrogen addition rates (no addition, 0.2% addition) and two biochar addition patterns (no addition, 1% addition, 3% addition) on the carbon and nitrogen contents, as well as bacterial communities of meadow soils, were investigated by conducting a one-year indoor incubation experiment. Biochar addition increased the relative abundance of Proteobacteria, Chloroflexi and Bacteroidota. The combination of biochar and nitrogen source significantly increased the total organic carbon, ammonium nitrogen, nitrate nitrogen and total nitrogen content of the meadow soil. Therefore, the addition of moderate amounts of biochar to meadow soils can contribute to sustainable ecological agriculture as a form of soil improvement.
Acknowledgments
The authors thank the supporters of this project and the referees for their constructive comments.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Author contribution
Pingnan Zhao: Conceptualization, Methodology, Data curation, Writing – original draft, Visualization, Investigation. Xiaoyuan Gao: Methodology, Data curation. Dong Liu: Visualization, Resources. Yuxuan Sun: Conceptualization，Data curation. Ming Li: Writing – review & editing. Song Han: Supervision, Funding acquisition.
Data availability statement
The datasets are available from the corresponding author on reasonable request.
Supplementary material
Supplemental data for this article can be accessed online at https://doi.org/10.1080/26395940.2023.2268272