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Effects of Irrigation Regime and Nitrogen Fertilizer Management on CH 4 , N 2 O and CO 2 Emissions from Saline–Alkaline Paddy Fields in Northeast China

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  • Jie Tang

    (Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China
    College of Environment and Resources, Jilin University, Changchun 130012, China)

  • Jingjing Wang

    (Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130012, China
    College of Environment and Resources, Jilin University, Changchun 130012, China)

  • Zhaoyang Li

    (College of Environment and Resources, Jilin University, Changchun 130012, China)

  • Sining Wang

    (College of Environment and Resources, Jilin University, Changchun 130012, China)

  • Yunke Qu

    (College of Environment and Resources, Jilin University, Changchun 130012, China)

Abstract

Irrigation regime and fertilizer nitrogen (N) are considered as the most effective agricultural management systems to mitigate greenhouse gas (GHG) emissions from crop fields, but few studies have involved saline–alkaline paddy soil. Gas emitted from saline–alkaline paddy fields (1-year-old and 57-year-old) was collected during rice growing seasons by the closed chamber method. Compared to continuous flooding irrigation, lower average CH 4 flux (by 22.81% and 23.62%), but higher CO 2 flux (by 24.84% and 32.39%) was observed from intermittent irrigation fields. No significant differences of N 2 O flux were detected. Application rates of N fertilizer were as follows: (1) No N (N0); (2) 60 kg ha −1 (N60); (3) 150 kg ha −1 (N150); and (4) 250 kg ha −1 (N250). The cumulative emissions of GHG and N fertilizer additions have positive correlation, and the largest emission was detected at the rate of 250 kg N ha −1 (N250). Global warming potential (GWP, CH 4 + N 2 O + CO 2 ) of the 57-year-old field under the N250 treatment was up to 4549 ± 296 g CO 2 -eq m −2 , approximately 1.5-fold that of N0 (no N application). In summary, the results suggest that intermittent irrigation would be a better regime to weaken the combined GWP of CH 4 and N 2 O, but N fertilizer contributed positively to the GWP.

Suggested Citation

  • Jie Tang & Jingjing Wang & Zhaoyang Li & Sining Wang & Yunke Qu, 2018. "Effects of Irrigation Regime and Nitrogen Fertilizer Management on CH 4 , N 2 O and CO 2 Emissions from Saline–Alkaline Paddy Fields in Northeast China," Sustainability, MDPI, vol. 10(2), pages 1-15, February.
    • Handle: RePEc:gam:jsusta:v:10:y:2018:i:2:p:475-:d:131328
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    References listed on IDEAS

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    1. Joshua Schimel, 2000. "Rice, microbes and methane," Nature, Nature, vol. 403(6768), pages 375-377, January.
    2. Li Cheng-Fang & Zhou Dan-Na & Kou Zhi-Kui & Zhang Zhi-Sheng & Wang Jin-Ping & Cai Ming-Li & Cao Cou-Gui, 2012. "Effects of Tillage and Nitrogen Fertilizers on CH4 and CO2 Emissions and Soil Organic Carbon in Paddy Fields of Central China," PLOS ONE, Public Library of Science, vol. 7(5), pages 1-9, May.
    3. Jie Tang & Shuang Liang & Zhaoyang Li & Hao Zhang & Sining Wang & Nan Zhang, 2016. "Emission Laws and Influence Factors of Greenhouse Gases in Saline-Alkali Paddy Fields," Sustainability, MDPI, vol. 8(2), pages 1-14, February.
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    1. Yerli, Caner & Sahin, Ustun & Oztas, Taskin, 2022. "CO2 emission from soil in silage maize irrigated with wastewater under deficit irrigation in direct sowing practice," Agricultural Water Management, Elsevier, vol. 271(C).
    2. Yang, Zhiyuan & Zhu, Yuemei & Zhang, Jinyue & Li, Xuyi & Ma, Peng & Sun, Jiawei & Sun, Yongjian & Ma, Jun & Li, Na, 2022. "Comparison of energy use between fully mechanized and semi-mechanized rice production in Southwest China," Energy, Elsevier, vol. 245(C).

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