Влияние Минеральных Удобрений И Биопрепаратов На Урожайность Зерна Озимой Пшеницы И Озимой Ржи В Лесостепи Среднего Поволжья

The aim of this research was the identification of mineral fertilizers and biological products for new winter crop varieties. It has been found when such varieties as winter rye “Estafeta Tatarstan” (Tatarstan’s Relay) and winter wheat “Volzhskay Kachestvennaya” (Volga Quality) was cultivated on leached well-phosphored and well-potassiumed black soil (chernozem) the highest crop yield was formed under 60% of nitrogen, 100% of phosphor and 60% of potassium removal condition. Increasing of winter wheat yield under these conditions was 1,15-1,23 t/h and winter wheat 0,99-1,16 t/ha in compare with common benchmarks. Biological fertilizers were effective under low values of mineral fertilizers. High conjugation cenosis capacity with yields was established (g2 = 0,88-0,96). It allows to use this indicator for identification of optimal fertilizers doses to create optimal balance between quantity of productive stalk and grains quantity in ear.