| 日光温室黄瓜栽培条件下土壤水分动态的数值模拟 |
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| 引用本文： | 王绍辉,任理,张福墁.日光温室黄瓜栽培条件下土壤水分动态的数值模拟[J].农业工程学报,2000,16(4):110-114. |
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| 作者姓名： | 王绍辉 任理 张福墁 |
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| 作者单位： | 中国农业大学 |
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| 基金项目： | 国家自然科学基金重点资助项目(39830230);国家“九五”工厂化农业攻关项目(952500801) |
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| 摘 要： | 为研究日光温室黄瓜需水规律,在温室中布设了主要气象因素和土壤水基质势监测装置。根据试验资料拟合得到了黄瓜根系伸展深度及叶面积指数动态曲线,进而获得蒸散与蒸腾模式及黄瓜根系吸水模式,在此基础上,依据土壤水动力学理论,建立了土壤水分动态的数值模型,对黄瓜两个主要生育期土壤水分动态进行了模拟,并就不同灌溉量和土壤不同初始含水率对土壤水分动态的影响进行了数值分析
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| 关 键 词： | 日光温室 黄瓜 土壤水分 数学模型 数值模拟 |
| 收稿时间： | 2000/1/28 0:00:00 |
Numerical Simulation of Soil Moisture Dynamics During Cucumber Crop Cultivation in Solar Greenhouse |
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| Wang Shaohui,Ren Li and Zhang Fuman.Numerical Simulation of Soil Moisture Dynamics During Cucumber Crop Cultivation in Solar Greenhouse[J].Transactions of the Chinese Society of Agricultural Engineering,2000,16(4):110-114. |
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| Authors: | Wang Shaohui Ren Li and Zhang Fuman |
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| Abstract: | In order to investigate the mechanism of soil moisture dynamics during cucumber crop cultivating,the main factors of weather and the water pressure in soil were monitored. From the experimental data, the formulae of variation of the root length and the leaf area index of cucumber with time were fitted, and then the models of evapotranspiration and transpiration under the condition of cucumber cultivation were obtained. Afer that, the numerical model of water movement in soil was established based on the theory of soil water dynamics. By simulating the moisture dynamics in soil during initial and flourishing fruit stages, the results showed that the mathematical models were in good agreement with the measured data. In addition, the influence of different irrigation amounts and different initial moisture contents on soil water movement was analyzed. |
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| Keywords: | solar greenhouse cucumber soil moisture mathematical model numerical simulation |
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