Substantiation of actual and forecast reclamation situation in assessing effectiveness of artificial drainage in irrigated areas in management of water resources

Abstract

In the context of this work, when evaluating the effectiveness of artificial drains on irrigated lands in modern conditions, irrigation networks, reclamation regime, irrigation, salt washing, drainage, agricultural technology (not considered here), and land use in a specific composition and high flow rates, as well as one-dimensional differential equations that provide the necessary water-salt regimes by substantiating the actual and predicted reclamation state using the WASTER computer program. The amount of drainage is taken from the methodology of the water-salt balance of the Research Institute of Irrigation and Water Problems (RIIWP) and is set in the WASTER computer program. For example, artificial drainage was used on irrigated lands in the Pakhtakor district of the Jizzakh region. Irrigation regimes and rates are considered in 2 variants, considering drainage in the WASTER computer program for these areas. These models take into account the absorption of moisture and salts from the soil into the root layer of the plant, taking into account the work of artificial drainage in boundary conditions. The calculated criteria for each option are compared and analyzed. In addition, the volumetric moisture content and salinity are observed and analyzed in the layers. In addition, we considered the experiments and methods carried out by other scientists.