Synergistic effects of biochar and nitrogen fertilizer enhance soil carbon emissions and microbial diversity in acidic orchard soils.

ABSTRACT: To explore the synergistic effects of biochar and nitrogen fertilizer on soil carbon emission and microbial diversity in acidic orchards were studied. A 300-day pot experiment was conducted, including control (CK), nitrogen fertilizer (N), 1% biochar (B1), 3% biochar (B3), nitrogen fertilizer with 1% biochar (NB1), and nitrogen fertilizer with 3% biochar application (NB3). After biochar and nitrogen fertilizer treatments, soil pH increased from 4.73 to 6.75 unit, soil organic carbon (SOC), mineral-associated organic carbon (MAOC) and particulate organic carbon (POC) contents increased 17.88%-41.14%, 31.95%-73.44% and 15.50%-48.90%, respectively, Dissolved organic carbon (DOC) content decreased by 33.56%-55.35%. The release of CO₂-C increased by 0.73%-232.43%, with the synergisti

SUBMITTER: Chen H 

PROVIDER: S-EPMC12774907 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature