Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China
Soil carbon (C) content plays an important role in maintaining or increasing soil quality and soil fertility. However, the impacts of different tillage and crop residue incorporation managements on greenhouse gas (GHG) emissions from paddy fields under the double-cropping rice (<i>Oryza sativa...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/2/517 |
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| author | Haiming Tang Chao Li Lihong Shi Kaikai Cheng Li Wen Weiyan Li Xiaoping Xiao |
| author_facet | Haiming Tang Chao Li Lihong Shi Kaikai Cheng Li Wen Weiyan Li Xiaoping Xiao |
| author_sort | Haiming Tang |
| collection | DOAJ |
| description | Soil carbon (C) content plays an important role in maintaining or increasing soil quality and soil fertility. However, the impacts of different tillage and crop residue incorporation managements on greenhouse gas (GHG) emissions from paddy fields under the double-cropping rice (<i>Oryza sativa</i> L.) system in southern China still need further study. Therefore, a field experiment was conducted to determine the impacts of different short-term (5-years) tillage and crop residue incorporation managements on soil organic carbon (SOC) content, SOC stock, and GHG emissions from paddy fields under the double-cropping rice system in southern China. The field experiment included four tillage treatments: rotary tillage with all crop residues removed as a control (RTO), conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), and no-tillage with crop residue retention (NT). These results indicated that SOC stock in paddy fields with CT, RT, and NT treatments increased by 4.64, 3.60, 3.50 Mg ha<sup>−1</sup> and 4.68, 4.21, and 4.04 Mg ha<sup>−1</sup> in 2019 and 2020, respectively, compared with RTO treatment. The results showed that early rice and late rice yield with CT treatment increased by 7.22% and 19.99% in 2019 and 6.19% and 6.40% in 2020, respectively, compared with RTO treatment. A two-year (2019–2020) investigation of GHG results indicated that methane emissions from paddy fields with NT treatment were decreased, but nitrous oxide emissions from paddy fields were increased. The lowest mean global warming potential (GWP) and per yield GWP carbon dioxide were found with NT treatment, compared to RT and CT treatments. Therefore, it was a beneficial practice for maintaining SOC stock and decreasing GHG mitigation under the double-cropping rice system in southern China by applying no-tillage with crop residue retention management. |
| first_indexed | 2024-03-09T22:49:03Z |
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| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T22:49:03Z |
| publishDate | 2022-02-01 |
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| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-12c45cc7fede4da2a3c88dfa61864f852023-11-23T18:23:24ZengMDPI AGAgronomy2073-43952022-02-0112251710.3390/agronomy12020517Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of ChinaHaiming Tang0Chao Li1Lihong Shi2Kaikai Cheng3Li Wen4Weiyan Li5Xiaoping Xiao6Farming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaFarming Ecology Department, Hunan Soil and Fertilizer Institute, Changsha 410125, ChinaSoil carbon (C) content plays an important role in maintaining or increasing soil quality and soil fertility. However, the impacts of different tillage and crop residue incorporation managements on greenhouse gas (GHG) emissions from paddy fields under the double-cropping rice (<i>Oryza sativa</i> L.) system in southern China still need further study. Therefore, a field experiment was conducted to determine the impacts of different short-term (5-years) tillage and crop residue incorporation managements on soil organic carbon (SOC) content, SOC stock, and GHG emissions from paddy fields under the double-cropping rice system in southern China. The field experiment included four tillage treatments: rotary tillage with all crop residues removed as a control (RTO), conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), and no-tillage with crop residue retention (NT). These results indicated that SOC stock in paddy fields with CT, RT, and NT treatments increased by 4.64, 3.60, 3.50 Mg ha<sup>−1</sup> and 4.68, 4.21, and 4.04 Mg ha<sup>−1</sup> in 2019 and 2020, respectively, compared with RTO treatment. The results showed that early rice and late rice yield with CT treatment increased by 7.22% and 19.99% in 2019 and 6.19% and 6.40% in 2020, respectively, compared with RTO treatment. A two-year (2019–2020) investigation of GHG results indicated that methane emissions from paddy fields with NT treatment were decreased, but nitrous oxide emissions from paddy fields were increased. The lowest mean global warming potential (GWP) and per yield GWP carbon dioxide were found with NT treatment, compared to RT and CT treatments. Therefore, it was a beneficial practice for maintaining SOC stock and decreasing GHG mitigation under the double-cropping rice system in southern China by applying no-tillage with crop residue retention management.https://www.mdpi.com/2073-4395/12/2/517ricetillagecrop residuesoil organic carbongreenhouse gasglobal warming potential |
| spellingShingle | Haiming Tang Chao Li Lihong Shi Kaikai Cheng Li Wen Weiyan Li Xiaoping Xiao Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China Agronomy rice tillage crop residue soil organic carbon greenhouse gas global warming potential |
| title | Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China |
| title_full | Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China |
| title_fullStr | Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China |
| title_full_unstemmed | Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China |
| title_short | Effects of Short-Term Tillage Managements on CH<sub>4</sub> and N<sub>2</sub>O Emissions from a Double-Cropping Rice Field in Southern of China |
| title_sort | effects of short term tillage managements on ch sub 4 sub and n sub 2 sub o emissions from a double cropping rice field in southern of china |
| topic | rice tillage crop residue soil organic carbon greenhouse gas global warming potential |
| url | https://www.mdpi.com/2073-4395/12/2/517 |
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