基于沙壤土黏粒量预测土壤水分入渗量和湿润锋深度
【目的】建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型。【方法】设计11种沙壤土中含不同黏粒质量百分比的处理，通过室内土柱入渗试验，研究在干体积质量一致的条件下，黏粒量对沙壤土累积入渗量和湿润锋运移深度的影响。【结果】在干体积质量为1.41 g/cm3条件下，黏粒量从4.51%增加至12.03%，沙壤土湿润锋运移至45 cm深度处所需时间由103 min增加至310 min，增幅为2倍；达到相对稳定的入渗速率时，沙壤土累积入渗量由8 cm减小至1 cm，减少87.5%。沙壤土湿润锋运移深度随时间变化模型的经验系数、累积入渗量随时间变化模型中吸湿率和稳渗率均与黏粒量呈指数衰减关系，拟合...
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| Published in | Guanʻgai paishui xuebao Vol. 39; no. 11; pp. 90 - 96 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | Chinese |
| Published |
Xinxiang City
Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
01.11.2020
宁夏大学土木与水利工程学院,银川 750021%宁夏大学土木与水利工程学院,银川 750021 宁夏节水灌溉与水资源调控工程技术研究中心,银川 750021 宁夏旱区现代农业水资源高效利用教育部工程研究中心,银川 750021 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-3317 |
| DOI | 10.13522/j.cnki.ggps.2019340 |
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| Abstract | 【目的】建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型。【方法】设计11种沙壤土中含不同黏粒质量百分比的处理，通过室内土柱入渗试验，研究在干体积质量一致的条件下，黏粒量对沙壤土累积入渗量和湿润锋运移深度的影响。【结果】在干体积质量为1.41 g/cm3条件下，黏粒量从4.51%增加至12.03%，沙壤土湿润锋运移至45 cm深度处所需时间由103 min增加至310 min，增幅为2倍；达到相对稳定的入渗速率时，沙壤土累积入渗量由8 cm减小至1 cm，减少87.5%。沙壤土湿润锋运移深度随时间变化模型的经验系数、累积入渗量随时间变化模型中吸湿率和稳渗率均与黏粒量呈指数衰减关系，拟合优度均大于0.968。【结论】利用沙壤土黏粒量预测土壤入渗量和湿润锋深度的模型具有较高的精度，能够快速预测沙壤土入渗量和湿润锋深度，预测值与实测值之间绝对误差小于10%。 |
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| AbstractList | 【目的】建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型。【方法】设计11种沙壤土中含不同黏粒质量百分比的处理，通过室内土柱入渗试验，研究在干体积质量一致的条件下，黏粒量对沙壤土累积入渗量和湿润锋运移深度的影响。【结果】在干体积质量为1.41 g/cm3条件下，黏粒量从4.51%增加至12.03%，沙壤土湿润锋运移至45 cm深度处所需时间由103 min增加至310 min，增幅为2倍；达到相对稳定的入渗速率时，沙壤土累积入渗量由8 cm减小至1 cm，减少87.5%。沙壤土湿润锋运移深度随时间变化模型的经验系数、累积入渗量随时间变化模型中吸湿率和稳渗率均与黏粒量呈指数衰减关系，拟合优度均大于0.968。【结论】利用沙壤土黏粒量预测土壤入渗量和湿润锋深度的模型具有较高的精度，能够快速预测沙壤土入渗量和湿润锋深度，预测值与实测值之间绝对误差小于10%。 S152.3; [目的]建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型.[方法]设计11种沙壤土中含不同黏粒质量百分比的处理,通过室内土柱入渗试验,研究在干体积质量一致的条件下,黏粒量对沙壤土累积入渗量和湿润锋运移深度的影响.[结果]在干体积质量为1.41 g/cm3条件下,黏粒量从4.51％增加至12.03％,沙壤土湿润锋运移至45 cm深度处所需时间由103 min增加至310 min,增幅为2倍;达到相对稳定的入渗速率时,沙壤土累积入渗量由8 cm减小至1 cm,减少87.5％.沙壤土湿润锋运移深度随时间变化模型的经验系数、累积入渗量随时间变化模型中吸湿率和稳渗率均与黏粒量呈指数衰减关系,拟合优度均大于0.968.[结论]利用沙壤土黏粒量预测土壤入渗量和湿润锋深度的模型具有较高的精度,能够快速预测沙壤土入渗量和湿润锋深度,预测值与实测值之间绝对误差小于10％. |
| Author | Tian, XIA TIAN Juncang |
| AuthorAffiliation | 宁夏大学土木与水利工程学院,银川 750021%宁夏大学土木与水利工程学院,银川 750021;宁夏节水灌溉与水资源调控工程技术研究中心,银川 750021;宁夏旱区现代农业水资源高效利用教育部工程研究中心,银川 750021 |
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| Author_FL | XIA Tian TIAN Juncang |
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| ClassificationCodes | S152.3 |
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| Copyright | Copyright Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 2020 Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| Keywords | 入渗 预测模型 稳渗率 沙壤土 黏粒量 |
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| Snippet | 【目的】建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型。【方法】设计11种沙壤土中含不同黏粒质量百分比的处理，通过室内土柱入渗试验，研究在干体积质量一致的条... S152.3; [目的]建立利用沙壤土黏粒量预测土壤水分入渗量和湿润锋深度的模型.[方法]设计11种沙壤土中含不同黏粒质量百分比的处理,通过室内土柱入渗试验,研究在干体积质量一... |
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| SubjectTerms | Bulk density Clay Clay soils Green-Ampt model Hydraulic properties Infiltration Loam Loam soils Mathematical models Parameters Sandy loam Sandy soils Soil columns Soil investigations Soil properties Soil surfaces Soil texture Soils Texture Transfer functions Water infiltration Wetting Wetting front |
| Title | 基于沙壤土黏粒量预测土壤水分入渗量和湿润锋深度 |
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