The paper presents the results of studies the efficiency of the Danube rice irrigation systems south of Ukraine on the basis of appropriate analysis of productivity leading rice rotation culture - the culture of rice. Substantiated a set of indicators covering different aspects of the complex process of formation of a crop of rice crop, with the aim of improving and optimizing the management of rice irrigation system in compliance with the modern ecological and economic requirements.

Ways to increase the environmental safety of rice irrigation systems based on reuse of drainage water were considered.