【摘要】 效用问题是农业水资源利用的关键和核心。构建科学合理的指标体系评价农业水资源利用效用对于实现农业水资源持续高效利用有着重要的意义。国内外对水资源利用效用评价的理论和方法研究经历了由单一的用水效率评价向以效率和效益有机结合为特征的效用评价的发展历程,其评价尺度也从最初的作物或田间等微观尺度向灌区、流域、国家乃至全球等中观和宏观尺度发展。未来农业水资源利用效用评价研究发展的重点,将集中在建立基于不同尺度水平衡观点上的农业水资源利用效用评价指标体系以及不同尺度指标的尺度效应及转换等方面。更多还原

【Abstract】 The key issue of agricultural water resources utilization(AWRU) is utility.It is significant to establish target system to evaluate the utility of AWRU for realizing the efficient and sustainable utilization of agricultural water resources.The methods and theories for evaluating the utility of AWRU are in process from water use efficiency to the combination of water use efficiency and benefit.Therefore the scale of evaluating the utility of AWRU is being transformed from micro-level of crop and field to the medium and macro-level of irrigation district,watershed,nation and globalization.The research of the evaluation of AWRU in the future will be focused on the establishment of the target system of AWRU which is based on the different water balance and the transformation and the scale effect at different scale.更多还原