土壤水资源评价的研究

Study on evaluation of soil water resources

在简述土壤水资源研究现状的基础上，以河北王瞳试验区为例，探讨土壤水资源的评价内容与方法．提出用土壤水资源年补给量、作物生长期土壤水资源可利用量等指标进行土壤水资源量的评价．结果表明：研究区冬小麦生长期土壤水资源可利用量约为３３０～４１５ｍｍ；夏玉米为４６０～５８０ｍｍ；棉花为６３０～６８０ｍｍ．特别干旱的１９９７年（降水量仅２３５９ｍｍ）降水几乎不对地下水产生补给，不灌溉地区土壤水年补给量近似等于降水量减去作物截留；

Data observed in Wangtong Experimental Area, Hebei, are analyzed as a case study to explore the method and content for evaluation of soil water resources. The annual recharged soil water and the amount of usable soil water in crop growing period are used as the main indices to evaluate the soil water resources.