ASSESSMENT OF THE DEPENDENCE OF WINTER WHEAT YIELD IN THE CENTRAL BLACK EARTH ECONOMIC REGION ON THE NATURE OF LARGE-SCALE CIRCULATION STRUCTURES OF THE ATMOSPHERE OF THE NORTHERN HEMISPHERE

Abstract

The relationship between the average values of winter wheat yields in five regions that are part of the Central Black Earth Economic Region and the nature of global atmospheric circulation was analyzed using the typification of elementary circulation mechanisms of the northern hemisphere of the Earth, compiled by B.L. Dzerdzeevsky. The assessment was made for the spring-summer vegetation period of the crop in question, based on data from 1961 to 2020. Also, based on the results obtained, a correlation and regression analysis of the dependence of winter wheat yield on the total repeatability of days with one or another type of global atmospheric circulation for the spring-summer and spring periods of vegetation was carried out. It is noted that the decrease in the yield of winter wheat in relation to the previous year in the regions under consideration is characteristic of the long-term predominance of one type of global atmospheric circulation in the Northern Hemisphere of the Earth. The increase is observed when, in total, during the spring-summer and spring parts of the vegetation period, there is a predominance of two different types of atmospheric circulation.