土壤水库与降水资源化研究进展  

Research progress on soil reservoir and utilization rainfall resources

作　　者：辜世贤[1] 熊亚兰[1] 徐霞[1] 魏朝富[1] 刘刚才[2] 

机构地区：[1]西南农业大学资源环境学院,重庆400716 [2]中科院水利部成都山地灾害与环境研究所,四川成都610041

出　　处：《西南农业学报》2003年第S1期29-32,共4页Southwest China Journal of Agricultural Sciences

基　　金：科技部西部攻关项目"四川低山丘陵区水土流失综合治理技术与示范

摘　　要：在雨养农业区,土壤水占总降水量的60%～70%;若在作物参与下有80%降水都转化为土壤水,而土壤水是作物的直接水源,是降水资源化的最有效形式。坡地表层50cm的土壤水分变化直接影响降水径流的形成,从而决定降水利用率的高低。土壤水分变化和降水产流机制是降水资源的理论基础。依据农田水量平衡原理,采用合理的雨水利用方法,使降水资源最有效地直接贮藏在土壤水库中或间接的形成土壤水,以实现土壤水资源的可持续利用。Soil water was the core of the field water balance and the pivot joint of conversion for the three kinds of farmland water(overland flow,soil water and groundwater).60?%-70?% precipitation was converted into soil water,which was the most available water for crop utilization under the rainfall-fed region,and the amount might rise to 80?% under crop growing farmland.The variation of soil water under 50?cm of hillslope surface directly influenced the conversion of rainfall into overland flow to decide the effi...

关 键 词：土壤水 土壤水库 降水资源化 

分 类 号：S273[农业科学—农业水土工程]