Kairov Bulat Asanovich RussiaSaratovSaratov State University, 83, Astrakhanskaya Str., Saratov, 410012, Russiamaster studentbulat.kajrov@yandex.ru Author's articles Model of Productivity of Spring Wheat in the Conditions of the Saratov Region Anomalous Cold and Anomalous Warm Winters in Saratov