An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain
The influence of groundwater level on water consumption of winter wheat in the Huaibei plain is examined, which is key for agricultural water management. Based on the group of large weighing lysimeters in the Wudaogou Hydrology and Water Resources experimental station from 2017 to 2020, the wheat ev...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Hydrogeology & Engineering Geology
2021-07-01
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| Series: | Shuiwen dizhi gongcheng dizhi |
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| Online Access: | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202011053 |
| _version_ | 1811169546667556864 |
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| author | Nan GU Jianyun ZHANG Cuishan LIU Zhenlong WANG Guoqing WANG |
| author_facet | Nan GU Jianyun ZHANG Cuishan LIU Zhenlong WANG Guoqing WANG |
| author_sort | Nan GU |
| collection | DOAJ |
| description | The influence of groundwater level on water consumption of winter wheat in the Huaibei plain is examined, which is key for agricultural water management. Based on the group of large weighing lysimeters in the Wudaogou Hydrology and Water Resources experimental station from 2017 to 2020, the wheat evapotranspiration at various groundwater levels is simulated and the key environmental factors affecting wheat evapotranspiration are identified for the purpose of exploring the characteristics of wheat evapotranspiration. During the whole growth period, the wheat evapotranspiration at four groundwater levels (depth of 0.5, 1.0, 2.0 and 3.0 m) is 510.50, 499.33, 567.88, 727.88 mm, respectively. The correlation coefficient between surface soil moisture and evapotranspiration under each groundwater level is −0.51, −0.71, −0.62 and −0.72, respectively. According to the classified categories by solar radiation, three typical days are chosen with the corresponding evapotranspiration intensity of 0.30 mm/hin the strong radiation day, of 0.07 mm/h in weaker radiation day, and of 0.03 mm/h in the weakest radiation day. The peak of evapotranspiration intensity happens from 5:00 to 20:00 in the strong radiation day, from 7:00 to 17:00 in the weaker radiation day, and from 9:00 to 17:00 in the weakest radiation day. The stronger the solar radiation, the weaker the influence of groundwater level on the peak of evapotranspiration intensity. This is probably because the large groundwater levelmay block energy transmission so that the peak of evapotranspiration intensity lags behind. Surface soil is the main source of evapotranspiration, especially at depth of 1.0 and 2.0 m. Simultaneously, solar radiation, net radiation and soil heat flux drive wheat evapotranspiration positively, while surface soil moisture, average air temperature and air humidity drive contrariwise. |
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| id | doaj.art-60ab888e6bed406786f6c9c7d47a206b |
| institution | Directory Open Access Journal |
| issn | 1000-3665 |
| language | zho |
| last_indexed | 2024-04-10T16:45:23Z |
| publishDate | 2021-07-01 |
| publisher | Editorial Office of Hydrogeology & Engineering Geology |
| record_format | Article |
| series | Shuiwen dizhi gongcheng dizhi |
| spelling | doaj.art-60ab888e6bed406786f6c9c7d47a206b2023-02-08T01:29:16ZzhoEditorial Office of Hydrogeology & Engineering GeologyShuiwen dizhi gongcheng dizhi1000-36652021-07-01484152410.16030/j.cnki.issn.1000-3665.202011053202011053An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei PlainNan GU0Jianyun ZHANG1Cuishan LIU2Zhenlong WANG3Guoqing WANG4Nanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, Jiangsu 210098, ChinaNanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, Jiangsu 210098, ChinaNanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, Jiangsu 210098, ChinaWudaogou Hydrology and Water Resources Experimental Station, Anhui &Huaihe River Institute of Hydraulic Research, Bengbu, Anhui 233000, ChinaNanjing Hydraulic Research Institute, State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing, Jiangsu 210098, ChinaThe influence of groundwater level on water consumption of winter wheat in the Huaibei plain is examined, which is key for agricultural water management. Based on the group of large weighing lysimeters in the Wudaogou Hydrology and Water Resources experimental station from 2017 to 2020, the wheat evapotranspiration at various groundwater levels is simulated and the key environmental factors affecting wheat evapotranspiration are identified for the purpose of exploring the characteristics of wheat evapotranspiration. During the whole growth period, the wheat evapotranspiration at four groundwater levels (depth of 0.5, 1.0, 2.0 and 3.0 m) is 510.50, 499.33, 567.88, 727.88 mm, respectively. The correlation coefficient between surface soil moisture and evapotranspiration under each groundwater level is −0.51, −0.71, −0.62 and −0.72, respectively. According to the classified categories by solar radiation, three typical days are chosen with the corresponding evapotranspiration intensity of 0.30 mm/hin the strong radiation day, of 0.07 mm/h in weaker radiation day, and of 0.03 mm/h in the weakest radiation day. The peak of evapotranspiration intensity happens from 5:00 to 20:00 in the strong radiation day, from 7:00 to 17:00 in the weaker radiation day, and from 9:00 to 17:00 in the weakest radiation day. The stronger the solar radiation, the weaker the influence of groundwater level on the peak of evapotranspiration intensity. This is probably because the large groundwater levelmay block energy transmission so that the peak of evapotranspiration intensity lags behind. Surface soil is the main source of evapotranspiration, especially at depth of 1.0 and 2.0 m. Simultaneously, solar radiation, net radiation and soil heat flux drive wheat evapotranspiration positively, while surface soil moisture, average air temperature and air humidity drive contrariwise.https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202011053groundwater tableevapotranspirationclustering analysisevapotranspiration intensitythe solar radiation |
| spellingShingle | Nan GU Jianyun ZHANG Cuishan LIU Zhenlong WANG Guoqing WANG An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain Shuiwen dizhi gongcheng dizhi groundwater table evapotranspiration clustering analysis evapotranspiration intensity the solar radiation |
| title | An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain |
| title_full | An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain |
| title_fullStr | An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain |
| title_full_unstemmed | An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain |
| title_short | An experimental study of the influence of groundwater level on water consumption of winter wheat in the Huaibei Plain |
| title_sort | experimental study of the influence of groundwater level on water consumption of winter wheat in the huaibei plain |
| topic | groundwater table evapotranspiration clustering analysis evapotranspiration intensity the solar radiation |
| url | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202011053 |
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