Reformation of Irrigation Water Flow System and Determination of Regional Water Requirements for Paddy Irrigation

Abstract

At the present, water quality and energy expended on water transportation compete with water requirements for irrigation.
Water allotments should be made in reference to a careful consideration first of the water requirements for irrigation. In this paper, a description is made of the CB method used for determining regional water requirements in paddy fields and which has been formulated as a linear optimization problem.
A new method is proposed for determining regional water requirements with reference to water quality and energy consumption.
On the basis of the results of the application of this method to fundamental situations, the effectiveness of a supplementary circulation irrigation system is investigated.