The natural moisture content of agricultural landscapes is one of the most important environmental and resource indicators and is determined by the ratio of the incoming water balance items to the potential evaporation from the water surface and hydrothermal conditions. The calculation of heat and moisture supply of agricultural landscapes is carried out on the basis of the coefficient of natural moisture (Ku) and the hydrothermal coefficient (HC). Long-term values of Ku and GTC for the growing season are characterized by certain variability: in dry years, Ku and GTC decreases from the line of average long-term indicators, and in wet years it increases.