Justification of methodological approaches to standardisation of irrigation as an element of resource saving and minimization of the anthropogenic load on agrobiocenosis

Abstract

Abstract The analysis shows that the value of agricultural crops’ evapotranspiration is influenced by many non-linearly changing factors in the closed system “soil - plant - atmosphere”. Therefore, the method of determining evapotranspiration is complemented by computational models, with the help of which evapotranspiration is determined with a sufficient degree of accuracy from the results of actual observations, including the hydrometeorological parameters of the corresponding irrigated areas, followed by comparison of these values with data obtained when determining potential evapotranspiration on the existing networks of hydrometeorological and water balance stations. As a result of research, empirical dependencies of multivariate determination of evapotranspiration, as well as on moisture reserves in the calculated soil layer and potential evapotranspiration, were established, taking into account the growth and development phases and the microclimatic coefficient of the summer planting period. The above methodological approach substantiates the new water and energy saving methods of forecasting, planning of irrigation processes of agricultural crops and operation-al management based on the spatial and temporal variability of hydrometeo parameters and actual moisture reserves in the calculated soil layer for the conditions of use of livestock waste.