| 引用本文: | 徐荣艳,戴丽纳,傅国圣,等.不同土质条件下小麦生长期潜水蒸发量影响因素研究[J].灌溉排水学报,2023,42(11):19-23. |
| XU Rongyan,DAI Lina,FU Guosheng,et al.不同土质条件下小麦生长期潜水蒸发量影响因素研究[J].灌溉排水学报,2023,42(11):19-23. |
|
| 摘要: |
| 【目的】揭示砂姜黑土与黄潮土条件下的气象因子和潜水埋深对小麦生长期潜水蒸发量的影响。【方法】基于五道沟实验站2010—2022年的逐日观测数据，采用相关分析和回归拟合方法，分析了砂姜黑土与黄潮土2种土质条件下的小麦生长期潜水蒸发量与7个气象因子之间的相关性，提出了潜水蒸发系数与0.2~5.0 m潜水埋深之间的非线性拟合函数。【结果】砂姜黑土潜水蒸发量与气象因子之间的相关程度从大到小依次为：地表温度、平均气温、水面蒸发量、日照时间、降水量、风速；黄潮土潜水蒸发量与气象因子之间的相关程度从大到小依次为：地表温度、日照时间、平均气温、水面蒸发量、降水量、风速。潜水蒸发系数与潜水埋深的非线性拟合结果表明，砂姜黑土小麦返青前呈逆函数关系（R2>0.95），返青后呈对数函数关系（R2>0.85）；黄潮土小麦呈对数函数关系（R2>0.75）。【结论】砂姜黑土潜水蒸发量临界埋深（Zm）介于2.0~3.5 m，黄潮土潜水蒸发量的Zm介于4.0~5.1 m。本研究构建的模型满足精度要求，可用于砂姜黑土与黄潮土小麦生长期潜水蒸发量的估算。 |
| 关键词: 潜水蒸发量；气象因子；潜水埋深；小麦；淮北平原 |
| DOI：10.13522/j.cnki.ggps.2023230 |
| 分类号: |
| 基金项目: |
|
| Study of Factors Affecting Wheat Growth-stage Evapotranspiration under Various Edaphic Conditions |
|
XU Rongyan, DAI Lina, FU Guosheng, JIANG Peng, DING Yutong,ZHANG Meina1, WANG Wanwan, WANG Zhenlong
|
|
1. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; 2. Bureau of Hydrology, Huaihui Commission (Information Center), Bengbu 233022, China; 3. Taizhou Branch, Jiangsu Hydrology and Water Resources Survey Bureau, Taizhou 225317, China; 4. Hebei Engineering University, Handan 056021, China; 5. Wudaogou Hydrology Experimental Station, Institute of Water Resources Science, Anhui Province (Huaihui Commission, Ministry of Water Resources), Bengbu 233000, China
|
| Abstract: |
| 【Objective】The ascent of groundwater into the vadose zone and its ultimate evaporation into atmosphere is an important hydrological process. This paper investigates the impact of meteorological factors and soil texture on evaporation of shallow groundwater under different depths from winter wheat in a sandy ginger black soil and a yellow tide soil.【Method】The study was based on data measured from 2010 to 2022 from the Wudaogou experimental station. The relationship between groundwater evaporation and seven meteorological factors was analyzed using correlation analysis and function fitting technique. A multiple regression model, along with a nonlinear fitting function, was developed to calculate the change in evaporation of shallow groundwater with its depth ranging from 0.2 to 5.0 m.【Result】① In the sandy ginger black soil, the significance of the impact of meteorological factors on groundwater evaporation was ranked in the order of surface temperature > average air temperature > surface evaporation > duration of sunshine > precipitation > wind speed; in the yellow tide soil, the ranking order was surface temperature > duration of sunshine > average air temperature > surface water evaporation > precipitation > wind speed. ② The multiple regression model is accurate for estimating evaporation of shallow groundwater at different depths, with R2>0.75 for the sandy ginger black soil and R2>0.70 for the yellow tide soil. ③ The relationship between groundwater evaporation and groundwater depth for the sandy ginger black soil followed an inverse function with R2>0.95 before the greening stage and a logarithmic function after the greening stage with R2>0.85. In contrast, in the yellow tide soil, it followed a logarithmic function with R2>0.75. ④ Depending on the growing season, the critical groundwater depth for evaporation ranged from 2.0 to 3.5 m for the sandy ginger black soil, and from 4.0 to 5.1 m for the yellow tide soil .【Conclusion】Groundwater evaporation depends not only on meteorological factors but also on soil texture and growing season of the winter wheat. The proposed models are accurate for estimating their relationships. |
| Key words: phreatic evaporation; meteorological factors; burial depth; wheat; Huaibei Plain |
