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| 耕层土壤含水量消长规律分析 | |
| 引用本文： | 苏玉杰,周景春,孔妲,张怀念,张存岭,陈若礼.耕层土壤含水量消长规律分析[J].水文,2007,27(3):50-52,56. |
| 作者姓名： | 苏玉杰 周景春 孔妲 张怀念 张存岭 陈若礼 |
| 作者单位： | 1. 安徽濉溪县气象局,安徽,濉溪,235100 2. 安徽濉溪县科协,安徽,濉溪,235100 3. 安徽濉溪县农技中心,安徽,濉溪,235100 |
| 摘 要： | 利用濉溪县耕层土壤含水量和同期观测的降水量、蒸发量资料分析表明:耕层土壤含水量的消长与基期土壤含水量、期间降水量和蒸发量呈多元直线相关关系,其中耕层土壤含水量增加量主要取决于基期土壤含水量的高低和降水量的多少;土壤含水量减少量主要取决于蒸发量的多少和基期土壤含水量的高低。耕层土壤相对含水量在50%～65%之间,需降水或补充灌溉15.9～82.3mm的水量。降水效力与基期土壤含水量和降水量呈多元指数曲线关系,蒸发效力与基期土壤含水量呈指数曲线关系。耕层土壤含水量的消退呈“快—缓慢—滞缓”的变化过程。使耕层相对含水量达到80%以上的一次降水(过程)过后,连续9.2～39.6d无降水耕层相对含水量尚可维持在60%以上。 |
| 关 键 词： | 土壤含水量 消长规律 降水量 蒸发量 耕层 |
| 文章编号： | 1000-0852（2007）03-0050-03 |
| 修稿时间： | 2006-09-18 |
Analysis of Increase and Decrease Rule of Soil Moisture Content in Topsoil |
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| SU Yu-jie,ZHOU Jing-chun,KONG Dan,ZHANG Cun-ling,CHEN Ruo-li.Analysis of Increase and Decrease Rule of Soil Moisture Content in Topsoil[J].Hydrology,2007,27(3):50-52,56. | |
| Authors: | SU Yu-jie ZHOU Jing-chun KONG Dan ZHANG Cun-ling CHEN Ruo-li |
| Institution: | 1. Meteorology Bureau of Suixi County, Suixi 235100, China; 2. Science and Technology Association of Suixi County, Suixi 235100, China; 3. Agricultural Technology Extension Station of Suixi County, Suixi 235100, China |
| Abstract: | Analysis of the soil moisture content in topsoil,precipitation,transpiration shows that there are multi-dimensional straight line correlation relations between increase and decrease of topsoil soil moisture content,base period soil moisture content,period precipitation and transpiration,in which the increase of topsoil soil moisture content mainly lie on the height of base period soil moisture content and quantity of precipitation,the decrease of soil moisture content mainly lie on the quantity of transpiration and height of base period soil moisture content.The relative soil moisture content is about 50%~65% in topsoil,which needs 15.9~82.3mm of precipitation or irrigated water.There is a multi-dimensional exponential curve relation between precipitation capacity,base period soil moisture content and precipitation.There is also a exponential curve relation between evaporation capacity and the base period soil moisture content. |
| Keywords: | soil moisture content increase and decrease rule precipitation transpiration topsoil |
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