滴灌条件下土壤湿润体特征研究  

The Laws of Soil Wetting Front under the Drip Irrigation

作　　者：何小梅[1] 

机构地区：[1]湖北水利水电职业技术学院,武汉430070

出　　处：《节水灌溉》2017年第8期26-29,共4页Water Saving Irrigation

摘　　要：基于非饱和土壤水运动理论,建立了地埋滴灌条件下土壤水分运动数学模型。采用HYDRUS-3D软件对模型进行求解。通过实测结果与模拟情况对比分析,湿润体内土壤含水率模拟值与实测值差异不大,相对误差在10%以内。总体上模拟结果能较真实地反映点源滴灌条件下的土壤水分运动规律,可为滴灌系统的设计和运行提供一定的理论依据。The Mathematical model of soil water infiltration under subsurface drip irrigation condition is established based on the principle of non-saturation soil water dynamics. The mathematic model is solved numerically by using the HYDRUS-3D software. Compared with the actual infiltration process, the simulated infiltration process is in agreement with actual infiltration process. The relative error is less than 10%. Generally speaking, simulated results can reflect the regulation of soil water movement with drip irrigation and can provide the theory guidance for drip system design.

关 键 词：土壤水分运移 滴灌 数值模拟 

分 类 号：S275.6[农业科学—农业水土工程]