| 王健,吴发启,孟秦倩,张青峰.不同利用类型土壤水分下渗特征试验研究[J].干旱地区农业研究,2006,(6):159~162 |
| 不同利用类型土壤水分下渗特征试验研究 |
| Experimental test about moisture infiltration character in different landuse type |
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| DOI：10.7606/j.issn.1000-7601.2006.06.36 |
| 中文关键词: 入渗 土地利用类型 土壤水分 入渗特征 |
| 英文关键词:infiltration bi-roll method land use |
| 基金项目:中科院知识创新项目(kzcx1-06-02-03)； 西北农林科技大学青年科研专项项目 |
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| 中文摘要: |
| 以延安市柳林镇高坡村不同利用类型的土地为研究对象,采用双环法进行水分入渗试验,分析讨论不同土地利用类型土壤水分平均入渗速率、稳渗率等下渗特征。结果表明:①不同土地利用类型水分入渗速率均可用霍顿方程来描述;②留茬农地入渗前200 min平均入渗速率可达1.52 mm/min,稳渗率为1.17 mm/min,其它土地利用类型其平均入渗速率与稳渗率均表现为留茬农地>耕地>荒草地>田间道路;③土壤容重直接影响水分入渗,容重愈大,稳渗率愈低,两者呈指数函数关系。 |
| 英文摘要: |
| This article takes the slope land of Gaopo village of Liulin town as the experimental point in Yan'an city.The advanced bi-roll method is adopted to illustrate the rules of infiltration rate in different landuse types.The result shows: ① the moisture infiltration rate in different landuse types can all be thoroughly defined through the Horton equation;② the average infiltration and the steadily infiltration attains 1.52(mm/min) and 1.17 mm/min respectively with 200 min in stubble farmland,the rate of whatever the average infiltration or the steadily infiltration is the same,it shows that the stubble farmland is a little higher than the arable land,the grassland,than the road;③ Soil density makes a direct impact on the moisture infiltration,the more the density is,the lower the steadily infiltration is.And there is an exponential function relationship between them. |
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