有作物潜水蒸发规律的试验研究和理论分析(2)——有作物生长条件下的地下水利用量计算模型研究  

Calculation model for uptake of shallow groundwater by crops

作　　者：王晓红[1] 侯浩波[2] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室 [2]武汉大学资源与环境科学学院,武汉430072

出　　处：《水力发电学报》2008年第4期66-70,53,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金重点项目(50239090)

摘　　要：在干旱与半干旱地区水资源日益紧缺,浅埋深地下水对作物的补给量占较大的比重,准确确定作物的地下水利用量对合理制定灌溉制度具有重要的意义。本文采用田间试验和数值模拟相结合的方法,探讨有作物生长条件下的潜水蒸发规律及其主要影响因素。结果表明,有作物生长条件下的潜水蒸发主要因素为生长阶段、作物腾发强度及潜水埋深,并引入GDD作为反应作物生长发育影响因子,通过分析这些主要影响因素与潜水蒸发量之间的函数关系,建立了能够反映作物、外部因素与地下水利用量之间关系的计算模型。As the water becomes scarce in arid and semi-arid regions, shallow water table plays an important role in crop water supply. It is significant to determine the shallow water table contribution to crop water use for designing an irrigation scheme. The field experimentation and numerical simulation are developed on study of the groundwater evaporation law and its main affecting factors under the conditions of crops growth. The results show that the main factors to effect the groundwater evaporation are crops growth stage, evapotranspiration and depth of shallow groundwater. By analyzing the relationships between these effecting factors and shallow groundwater uptake, the calculating models are developed to describe the relationships between the growth stage, the external factors and groundwater uptake.

关 键 词：水资源 潜水蒸发 作物地下水利用量 生长发育因子 

分 类 号：X143[环境科学与工程—环境科学]