Response of bean cultures’ water use efficiency against climate warming in semiarid regions of China
| Autor: | Huang Juying, Xiao Guoju, Zhang Fengju, Luo Chengke, Wang Jing, Yao Yubi, Wang Runyuan, Ma Fei, Qiu Zhengji |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Semiarid regions Yield Soil Science Photosynthesis 01 natural sciences Article Crop Temperate climate Climate change Water-use efficiency Transpiration Earth-Surface Processes Water Science and Technology biology Global warming food and beverages Water use efficiency 04 agricultural and veterinary sciences biology.organism_classification Broad bean Agronomy Seedling 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Stage (hydrology) Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Agricultural Water Management |
| ISSN: | 0378-3774 |
| DOI: | 10.1016/j.agwat.2016.05.010 |
| Popis: | Highlights • Global warming will significantly influence the yield and water use efficiency of bean cultures. • Transpiration was faster than photosynthesis when the temperature was increased by 1.5 °C above. • The yield decreased by 39.2–88.4% when the temperature was increased by 1.5–2.0 °C. • The water use efficiency quickly decreased when the temperature was increased by 1.0 °C above. Farm crop growing and high efficiency water resource utilizing are directly influenced by global warming, and a new challenge will be given to food and water resource security. A simulation experiment by farm warming with infrared ray radiator was carried out, and the result showed photosynthesis of broad bean was significantly faster than transpiration during the seedling stage, ramifying stage, budding stage, blooming stage and podding stage when the temperate was increased by 0.5–1.5 °C. But broad bean transpiration was faster than photosynthesis during the budding stage, blooming stage and podding stage when the temperature was increased by 1.5 °C above. The number of grain per hill and hundred-grain weight were significantly increased when the temperature was increased by 0.5–1.0 °C. But they significantly dropped and finally the yield decreased when the temperature was increased by 1.0 °C above. The broad bean yield decreased by 39.2–88.4% when the temperature was increased by 1.5–2.0 °C. The broad bean water use efficiency increased and then decreased with temperature rising. The water use efficiency increased when the temperature was increased by 1.0 °C below, and it quickly decreased when the temperature was increased by 1.0 °C above. In all, global warming in the future will significantly influence the growth, yield and water use efficiency of bean cultures in China’s semiarid regions. |
| Databáze: | OpenAIRE |
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