Fundamental Research on Quantitative Analyses for Multi-Functions of Agricultural Water Use

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The purpose of research is to clarify the multi-functions and multi roles of agricultural water use, quantitatively.-The suitable operation and management of water system was discussed considering buffer functions of regulating ponds and farm ponds.-The main factors concerning to the practical water system operation were analyzed applying the quantitative analysis method I.-The historical investigations on the water right were carried out to understand the propriety of the regional water use included in a part of irrigation water.-The traditional water use and water system operation were analyzed and discussed for the Asia monsoon paddy farming area including Japan.-The theoretical model on the evapo-transpration analyses was proposed for non-homogeneous field allocations.