| 局部控制地下浸润灌溉土壤入渗特性研究 |
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| 引用本文： | 郑 健,胡笑涛,蔡焕杰.局部控制地下浸润灌溉土壤入渗特性研究[J].西北农林科技大学学报(社会科学版),2007,35(3):227-232. |
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| 作者姓名： | 郑 健 胡笑涛 蔡焕杰 |
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| 作者单位： | 1. 西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100
2. 西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100;中国农业大学,农业水问题研究中心,北京,100083 |
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| 摘 要： | 通过室内试验,对局部控制地下浸润灌溉不同处理下的土壤水分运动进行了观测分析,并用幂函数对不同处理下湿润锋入渗距离及入渗速率与入渗时间之间的关系进行了拟合,用Kostiakov入渗模型建立了局部控制地下浸润灌溉中累计入渗量与累计入渗时间之间的关系,同时确定了局部控制地下浸润灌溉合理的技术要素组合范围。结果表明,所有处理条件下湿润锋的推移及土壤入渗速率与入渗时间均呈显著或较显著的幂函数关系;Kostiakov入渗模型能准确地描述局部控制地下浸润灌溉中累计入渗量与累计入渗时间之间的关系;局部控水浸润灌溉合理的技术要素组合为:淹没高度为7-9 cm,适宜开孔率为14%左右,灌水下限不低于70%田间持水率。
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| 关 键 词： | 局部控制地下浸润灌溉 湿润峰入渗速率 累计入渗量 技术要素 |
| 文章编号： | 1671-9387(2007)03-0227-06 |
| 收稿时间： | 2006/6/13 0:00:00 |
| 修稿时间： | 2006-06-13 |
Experiment on soil infiltration properties under water-controlled partial wetting irrigation |
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| ZHENG Jian,HU Xiao-tao,CAI Huan-jie,KANG Shao-zhong,WANG Lei.Experiment on soil infiltration properties under water-controlled partial wetting irrigation[J].Journal of Northwest Sci-Tech Univ of Agr and,2007,35(3):227-232. |
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| Authors: | ZHENG Jian HU Xiao-tao CAI Huan-jie KANG Shao-zhong WANG Lei |
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| Institution: | 1(1 The Key Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education,Northwest A & F University,Yangling,Shaanxi 712100,China;2 Center for Agricultural Water Research in China,China Agriculture University,Beijing 100083,China) |
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| Abstract: | Through laboratory experiment,we analyzed the soil water movement under different treatments of water-controlled partial wetting irrigation,fitting analyzed the relationship between the inflitration distance of wetting front and infiltration time and infiltration rate under different treatments by using power function,and established the relationship between the cumulative infiltration and cumulative time with Kostiakov infiltration model.Meanwhile,we obtained the technique parameters assembly range of water-controlled partial wetting irrigation.The results indicated that,we can use Kostiakov infiltration model to describe the relationship between the cumulative infiltration and cumulative time accurately;the technique parameters assembly range of water-controlled partial wetting irrigation was:the suitable perforation ratio is about 14%,the submergence height is 7-9 cm,and the irrigation low limit is above 70%. |
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| Keywords: | water-controlled partial wetting irrigation wetting front infiltration rate cumulative infiltration technique parameters |
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