A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system
Abstract The effects of global warming on crop production have received great attention in recent years. However, inconsistent results have been obtained with regard to major crops such as rice and wheat in rice–wheat rotation systems of China. Therefore, we undertook a comprehensive meta‐analysis o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-11-01
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| Series: | Food and Energy Security |
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| Online Access: | https://doi.org/10.1002/fes3.316 |
| _version_ | 1818824865736556544 |
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| author | Yongjin Zhou Le Xu Youzun Xu Min Xi Debao Tu Jinhua Chen Wenge Wu |
| author_facet | Yongjin Zhou Le Xu Youzun Xu Min Xi Debao Tu Jinhua Chen Wenge Wu |
| author_sort | Yongjin Zhou |
| collection | DOAJ |
| description | Abstract The effects of global warming on crop production have received great attention in recent years. However, inconsistent results have been obtained with regard to major crops such as rice and wheat in rice–wheat rotation systems of China. Therefore, we undertook a comprehensive meta‐analysis of literature data. The yield response to warming differed for rice and wheat in the rice–wheat rotation system. Overall, warming significantly increased wheat yield (by 4.8%) but significantly reduced rice yield (by 14.8%). A number of factors were responsible for these observations. For example, rice yield responses varied with the temperature increase, variety and nitrogen (N) rate. Of these, N was the most important variable influencing yield responses to warming. The yield loss for rice was lower at temperature increases of 0.40–1.40°C and at a high N rate than that at temperature increases of 1.60–2.49°C and at a low N rate, respectively. The yield loss of indica rice was lower than that of japonica rice. For wheat, however, yield responses to warming varied with the warming regime, ambient temperature, temperature increases, and CO2 concentrations. Of these factors, ambient temperature was the most important variable influencing yield in response to warming. Warming increased wheat yield at a mean growth season temperature ≤10°C, temperature increases of 0.80–1.50°C, and at ambient CO2 concentrations. In addition, either daytime warming or nighttime warming significantly increased wheat yield. However, all‐day warming had no effect on wheat yields. We conclude that global warming will benefit wheat production but result in a serious loss of rice yield in rice–wheat rotations in China. |
| first_indexed | 2024-12-19T00:02:40Z |
| format | Article |
| id | doaj.art-2550e0a206f4432e90dbb439cd37bfc9 |
| institution | Directory Open Access Journal |
| issn | 2048-3694 |
| language | English |
| last_indexed | 2024-12-19T00:02:40Z |
| publishDate | 2021-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Food and Energy Security |
| spelling | doaj.art-2550e0a206f4432e90dbb439cd37bfc92022-12-21T20:46:23ZengWileyFood and Energy Security2048-36942021-11-01104n/an/a10.1002/fes3.316A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation systemYongjin Zhou0Le Xu1Youzun Xu2Min Xi3Debao Tu4Jinhua Chen5Wenge Wu6Rice Research Institute Anhui Academy of Agricultural Sciences Hefei Anhui ChinaNational Key Laboratory of Crop Genetic Improvement, MARA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River College of Plant Science and Technology Huazhong Agricultural University Wuhan Hubei ChinaRice Research Institute Anhui Academy of Agricultural Sciences Hefei Anhui ChinaRice Research Institute Anhui Academy of Agricultural Sciences Hefei Anhui ChinaRice Research Institute Anhui Academy of Agricultural Sciences Hefei Anhui ChinaAnhui Agrometeorological Center Hefei Anhui ChinaRice Research Institute Anhui Academy of Agricultural Sciences Hefei Anhui ChinaAbstract The effects of global warming on crop production have received great attention in recent years. However, inconsistent results have been obtained with regard to major crops such as rice and wheat in rice–wheat rotation systems of China. Therefore, we undertook a comprehensive meta‐analysis of literature data. The yield response to warming differed for rice and wheat in the rice–wheat rotation system. Overall, warming significantly increased wheat yield (by 4.8%) but significantly reduced rice yield (by 14.8%). A number of factors were responsible for these observations. For example, rice yield responses varied with the temperature increase, variety and nitrogen (N) rate. Of these, N was the most important variable influencing yield responses to warming. The yield loss for rice was lower at temperature increases of 0.40–1.40°C and at a high N rate than that at temperature increases of 1.60–2.49°C and at a low N rate, respectively. The yield loss of indica rice was lower than that of japonica rice. For wheat, however, yield responses to warming varied with the warming regime, ambient temperature, temperature increases, and CO2 concentrations. Of these factors, ambient temperature was the most important variable influencing yield in response to warming. Warming increased wheat yield at a mean growth season temperature ≤10°C, temperature increases of 0.80–1.50°C, and at ambient CO2 concentrations. In addition, either daytime warming or nighttime warming significantly increased wheat yield. However, all‐day warming had no effect on wheat yields. We conclude that global warming will benefit wheat production but result in a serious loss of rice yield in rice–wheat rotations in China.https://doi.org/10.1002/fes3.316food securityglobal warminggrain yieldmeta‐analysisrice–wheat rotation system |
| spellingShingle | Yongjin Zhou Le Xu Youzun Xu Min Xi Debao Tu Jinhua Chen Wenge Wu A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system Food and Energy Security food security global warming grain yield meta‐analysis rice–wheat rotation system |
| title | A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system |
| title_full | A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system |
| title_fullStr | A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system |
| title_full_unstemmed | A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system |
| title_short | A meta‐analysis of the effects of global warming on rice and wheat yields in a rice–wheat rotation system |
| title_sort | meta analysis of the effects of global warming on rice and wheat yields in a rice wheat rotation system |
| topic | food security global warming grain yield meta‐analysis rice–wheat rotation system |
| url | https://doi.org/10.1002/fes3.316 |
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