Organic waste recycling application increases N availability and mitigates N2O emission without crop yield penalty in the North China Plain
The results showed that organic materials significantly increased soil total nitrogen (3.04%-9.10%) and N recovery efficiency (RE<sub>N</sub>; 42.21%-44.99%), but pig manure was more beneficial in increasing crop yields (3.50%), especially wheat yields (8.72%), and RE<sub>N</sub> was significantly higher than that of the other treatments. Organic materials performed differently in wheat and maize seasons, and wheat yield could be improved by organic materials return. Organic materials stimulated N<sub>2</sub>O emission in wheat season (4.28%-32.20%), while biogas residue inhibited the N<sub>2</sub>O emission in maize season (47.47%). The negative effect of straw and biogas residue on yield decreased with increasing years of return, and pig manure continued to contribute to yield. In conclusion, pig manure is the optimal alternative that can increase crop yield, soil N content, and RE<sub>N</sub> without stimulating N<sub>2</sub>O emissions.
Authors
- Hailun Du
- Yuanquan Chen (ORCID: https://orcid.org/0000-0001-6947-1319)
- Wangsheng Gao
- Qing Liu (ORCID: https://orcid.org/0000-0002-0257-0694)
- Jixiao Cui (ORCID: https://orcid.org/0000-0001-9224-5600)
- Lin Chen (ORCID: https://orcid.org/0000-0003-2058-3621)
Institutions
- Heilongjiang Provincial Academy of Agricultural Sciences (CN)
- Shandong Academy of Agricultural Sciences (CN)
- Chinese Academy of Agricultural Sciences (CN)
- Institute of Environment and Sustainable Development in Agriculture (CN)
- China Agricultural University (CN)
Publication Details
- Journal
- Frontiers in Plant Science
- Published
- 2024-09-17
- DOI
- https://doi.org/10.3389/fpls.2024.1446277
- Citations
- 5
- Primary Topic
- Soil Carbon and Nitrogen Dynamics
- Type
- article
- Field-Weighted Citation Impact
- 1.67
Funders
- National Key Research and Development Program of China