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首页> 外文期刊>Agricultural Engineering International: CIGR Ejournal >UPFLOW model prediction of capillary rise into root zone soil moisture for shallow water table soils of Obio Akpa river floodplain in the Niger-Delta environment, Nigeria.
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UPFLOW model prediction of capillary rise into root zone soil moisture for shallow water table soils of Obio Akpa river floodplain in the Niger-Delta environment, Nigeria.

机译：尼日利亚尼日尔三角洲环境浅水表土浅水表土壤毛细管升降毛细管土壤水分的上流模型预测。

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UPFLOW model was used to provide assessments of capillary rise into root zone soil moisture in shallow water table soils of Obio Akpa river floodplain using drum-culture lysimeters. Soil moisture depletion experiment was undertaken through the use of drums with bases intact and drums with bases removed and sunk in the field at different depths during the dry period with no rainfall and no irrigation. UPFLOW model was validated by comparing simulated capillary soil moisture values from a falling water table with gravimetrically observed data from 0 – 500, 500-1000 and, 1000-1500 mm water table depth in sandy loam and sandy clay soils. Simulated runs mimic the observed fluctuations and trend of capillary rise to the root zone. The statistical pointers of simulation performance showed that good inter-relation exists between observed and simulated vales for both sandy loam and sandy clay soils respectively. The index of agreement, d (0.9989 and 0.9948) shows a good performance of the model for both sandy loam and sandy clay soils respectively. Model efficiency value of about 99.75 and 99.48 % for both the sandy loam and sandy clay soils respectively indicate that the performance of UPFLOW model in simulating capillary rise is satisfactory. Hence, UPFLOW can be used with confidence in simulating capillary rise to the root zone in Obio Akpa, Nigeria.
机译：普通模型用于使用鼓培养立霉素对OBIO AKPA河洪泛区浅水表土壤中毛细管升降区土壤水分的评估。土壤水分耗尽实验通过使用滚筒与基部完好无损和鼓，在干燥的时期在不同深度的底座上除去底座，没有降雨，没有灌溉。通过将模拟毛细管土壤水分值与来自0-500,500-1000和1000-1500毫米水位深度的重物观察到的落水桌子从下降水位进行比较，通过比较落水台的模拟毛细管土壤湿度值进行验证。模拟运行模拟了观察到的毛细管升到根区的波动和趋势。模拟性能的统计指针表明，砂质壤土和砂质粘土土壤的观察和模拟阀之间存在良好的相互关系。协议指数D（0.9989和0.9948）分别显示了砂质壤土和砂质粘土土壤模型的良好性能。桑迪壤土和沙质粘土土壤的模型效率值约为99.75和99.48％，分别表明毛细血管升高在模拟模型中的性能令人满意。因此，溢出可以在尼日利亚Obio Akpa中的根部区域模拟毛细管升起的置信度。

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