Liming promotes the leaching of carbon and nitrogen in a double-cropped rice system.

ABSTRACT: Lime application is known to effectively increase rice yield and mitigate soil acidification, but its effect on the leaching losses of carbon (C) and nitrogen (N) from paddies remain unclear. Here, two treatments (no liming as control and liming at a rate of 2.0 t ha^-1 as (Ca(OH)₂)) were conducted in a double-cropped rice field with acidic red soil. The results indicated that liming significantly increased grain yield by 12.7% and 12.3% in the early and late rice season relative to the unlimed treatment, respectively. The concentration of ammonium N (NH₄⁺-N) in leachates was low and no significant difference was observed between the two treatments. Liming significantly increased the leaching losses of nitrate N (NO₃^--N, + 29

SUBMITTER: Tang J 

PROVIDER: S-EPMC12317146 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature