Abstract
The paper presents the results of studies of mathematical relationships between the irrigation rate and the sum of positive temperatures, which makes it possible to optimize and rationalize the use of natural resource potentials without compromising the productivity of forage crops. The dynamics of soil moisture during the growing season on sierozemic soils in the south of Kazakhstan with a sum of positive temperatures above 10 ° C has been established. The carried out mathematical analyzes of the irrigation regime for corn in the southern zone of Kazakhstan gives reason to believe that in the current natural and economic conditions, it is necessary to introduce into the structure of sown areas demanded in the food market of agricultural crops, aimed at the rational use of land and water and natural resources.
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