| 土壤脱水过程中结构与含水率间的定量关系 |
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| 引用本文： | 樊贵盛,孔令超,韩永鸿,李尧.土壤脱水过程中结构与含水率间的定量关系[J].灌溉排水学报,2012,31(5). |
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| 作者姓名： | 樊贵盛 孔令超 韩永鸿 李尧 |
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| 作者单位： | 1. 太原理工大学 水利科学与工程学院
2. 太原理工大学 环境科学与工程学院,太原,030024 |
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| 摘 要： | 基于9种土壤脱水过程中土壤密度和含水率的跟踪实测数据,揭示了脱水过程中地表土壤密度随时间的变化过程,分析了土壤结构与含水率之间的定量关系。结果表明,土壤脱水过程中,土壤密度与含水率之间存在着较密切的二次函数相关关系;当含水率在某值以上时,土壤密度随含水率降低逐渐增大,而在此含水率值以下时,土壤密度随含水率降低而减小,但减小的幅度要小于增大的幅度,即灌水和脱水过程的综合作用结果是使土壤密度增大。
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| 关 键 词： | 地面灌溉 土壤密度 土壤含水率 土壤脱水过程 |
The Quantitative Relationship between Soil Structure and Moisture Content during Soil Dehydration Process |
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| Abstract: | Based on the tracking test data of the soil bulk density and moisture contents of nine kinds of soils during soil dehydration process,the changes of soil bulk density with time were revealed in the process,and the quantitative relationship between soil bulk density and moisture content was analyzed.The results showed that there was a relatively close quadratic function correlation relationship between soil bulk density and moisture content;when moisture was above a certain value,soil bulk density increased gradually with the decreasing moisture content;however,when moisture was below the value,soil bulk density became smaller gradually with the decreasing moisture content,but the range of decreasing was less than that of increasing,and it was that under the combined effect of factors of irrigation and dehydration,soil bulk density increased. |
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| Keywords: | surface irrigation soil bulk density soil moisture content soil dehydration process |
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