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Purpose: to conduct research and develop an algorithm for soil water regime modeling on reclaimed fields of reclamation systems of double regulation (drainage-humidification, drainage-irrigation) for the subsequent development of information and software tools ensuring the possibility of operational regulation of water regimes of soils on reclaimed agricultural fields in various regions of the Russian Federation.  Materials and methods. The methodological and informational basis was formed by methods of collecting and processing information, methods of systematization, normative and technical documents, provisions for the information technologies development as well as existing means of information technology support for land reclamation tasks.  Results. The simulation algorithm includes three stages: preparation for simulation, simulation itself, simulation results evaluation. At the modeling stage, the mode of water supply to the object (reclaimed field) by the surface method (sprinkling) and (or) by moistening (feeding) with groundwater was set, and then the moisture content at the object was calculated. At the stage of evaluating the modeling results, the terms, discharges and volumes supplied to the object by the surface method and by moistening the soil with groundwater were determined, and data on the results of the modeling were formed. To display the results visually, the main screen form of the water regimes modeling program in “Water consumer” control loop was developed.  Conclusions. As a result of the research, the algorithm for water regime modeling in “Water consumer” control loop (reclaimed field) was developed. The developed algorithm makes it possible to regulate quickly the moisture storage in soil for given crop irrigation regimes due to sprinkling and (or) raising the groundwater level.

Modeling the soil water regime in the fields of irrigation systems of double regulation