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膜孔灌平均入滲水深簡化計算模型建立與驗
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Infiltration Model of Film Hole Irrigation and Its Validation
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    摘要:

    以非飽和土壤水分運動理論為基礎(chǔ)，研究了膜孔灌土壤水分運動的數(shù)學(xué)模型,，并用SWMS—3D軟件對多種典型土壤的膜孔灌入滲特性進行模擬,，利用模擬結(jié)果分析了膜孔灌入滲特性及其影響因素，提出了包含開孔率,、膜孔直徑的膜孔灌點源平均入滲水深簡化模型,。采用多種土壤膜孔灌入滲室內(nèi)試驗結(jié)果與已有文獻資料對所建模型進行驗證，結(jié)果表明所建模型能較準確地反映膜孔灌點源入滲特性,，可為確定合理的膜孔灌灌水技術(shù)要素組合提供理論依據(jù),。

    Abstract:

    Based on the theory for water movement in non-saturated soil, the mathematical model of film hole irrigation was developed to describe soil water movement, and the simulation was performed by using SWMS—3D software. According to the simulated results, the characteristics and infecting factors of infiltration of film hole irrigation was analyzed, and the simplified film hole infiltration model including the opening hole ratio and the film hole diameter was presented. The model was verified by infiltration experiments at several typical soils condition and other researcher’s experiment results. It was showed that the model is simple and credible with less parameters, which can been using for deciding reasonable technological elements of film hole irrigation water to improve irrigation water quality.

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馬孝義,范嚴偉,王術(shù)禮,孫秀娟,王波雷.膜孔灌平均入滲水深簡化計算模型建立與驗[J].農(nóng)業(yè)機械學(xué)報,2009,40(8):67-73. Infiltration Model of Film Hole Irrigation and Its Validation[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(8):67-73.

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