Version 1
: Received: 18 April 2024 / Approved: 18 April 2024 / Online: 18 April 2024 (11:24:15 CEST)
How to cite:
Liu, J.; He, Y.; Chen, J.; Huang, S.; Sun, Y. Lime Application Reduces Methane Emissions from a Double-Cropped Rice Field under the Substitution of Chemical Fertilizers by Pig Manure. Preprints2024, 2024041226. https://doi.org/10.20944/preprints202404.1226.v1
Liu, J.; He, Y.; Chen, J.; Huang, S.; Sun, Y. Lime Application Reduces Methane Emissions from a Double-Cropped Rice Field under the Substitution of Chemical Fertilizers by Pig Manure. Preprints 2024, 2024041226. https://doi.org/10.20944/preprints202404.1226.v1
Liu, J.; He, Y.; Chen, J.; Huang, S.; Sun, Y. Lime Application Reduces Methane Emissions from a Double-Cropped Rice Field under the Substitution of Chemical Fertilizers by Pig Manure. Preprints2024, 2024041226. https://doi.org/10.20944/preprints202404.1226.v1
APA Style
Liu, J., He, Y., Chen, J., Huang, S., & Sun, Y. (2024). Lime Application Reduces Methane Emissions from a Double-Cropped Rice Field under the Substitution of Chemical Fertilizers by Pig Manure. Preprints. https://doi.org/10.20944/preprints202404.1226.v1
Chicago/Turabian Style
Liu, J., Shan Huang and Yanni Sun. 2024 "Lime Application Reduces Methane Emissions from a Double-Cropped Rice Field under the Substitution of Chemical Fertilizers by Pig Manure" Preprints. https://doi.org/10.20944/preprints202404.1226.v1
Abstract
The substitution of chemical fertilizers by organic manure plays a critical role in sustainable crop production. Nevertheless, organic amendments promote the global warming potential (GWP) in rice paddies due to increased methane (CH4) emissions. Increasing evidence shows that lime application can reduce CH4 emissions from acidic paddy soils, while it is still not clear whether liming can reduce the GWP in rice fields under organic manure substitution. A two-year field experiment was conducted to investigate the impacts of pig manure substitution and lime application on grain yield, CH4 and nitrous oxide (N2O) emissions in a subtropical double-cropped rice field in China. The experiment consisted of three treatments: chemical fertilization (CF, 100% N from urea), 50% of chemical N substituted by pig manure (1/2N + M), and the 1/2N + M treatment plus lime amendment (1/2N + M + L). On average, 1/2N + M reduced rice yield by 5.65% compared to CF, while lime application had no effect on rice yield. Mean cumulative CH4 emissions were 218.8% higher in 1/2N + M than in CF, whereas 1/2N + M + L reduced CH4 emissions by 36.6% compared to 1/2N + M. Neither pig manure substitution nor lime application affected N2O emissions. Consequently, 1/2N + M increased the GWP and greenhouse gas intensity (GHGI) by 214.6% and 228.3%, respectively, compared to CF. In contrast, 1/2N + M + L reduced the GWP and GHGI by 36.4% and 36.5% compared to 1/2N + M. Lime application can mitigate CH4 emissions and GWP induced by pig manure amendment in double-cropped rice fields.
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
