REVIEW OF CALCULATION METHODS FOR DETERMINING THE TOTAL EVAPORATION OF IRRIGATED AGRICULTURAL FIELDS.

Аннотация

Determining the optimal rates and timing of irrigation is one of the most difficult tasks of irrigated agriculture. When solving it, it is necessary to take into account all the natural and climatic conditions of the region. The main task before us is to determine the total evaporation from cotton fields with the calculation-empirical methods of Penman-Monteith, Blaine-Criddle, N.I. Ivanov, S.M. Alpatev. Field studies to determine the total evaporation were carried out in the farm "Jalilbobo" of the Shafirkan district of the Bukhara region . To solve the desired problem, two experimental plots were organized - one on a field irrigated by furrow irrigation, the other - on a drip irrigation site. The soils of the study area are semi-hydromorphic, slightly saline, light loamy in terms of mechanical composition.