THE INTENSITY OF CARBON UPTAKE BY FIELD CROPS, DEPENDING ON THE CULTIVATION TECHNOLOGY IN THE REPUBLIC OF TATARSTAN

Abstract

Carbon dioxide is absorbed by plants during photosynthesis and the intensity of this process depends on the solar radiation coming to this territory, the temperature regime, the availability of moisture and batteries. The amount of CO2 absorbed by plants is determined by the accumulated dry biomass or yield. The potential yield of field crops in production conditions is not always achieved. The paper presents the results of studies on the effect of calculated doses of mineral fertilizers on various types of soils with different moisture indicators on the formation of dry biomass by spring durum wheat. Field experiments were carried out on gray forest soils in 2005-2008, which occupy 43.7% of agricultural land in the Republic of Tatarstan and chernozems in 2001-2003, occupying 39.9%. The assimilation of mineral nutrition elements from soil and fertilizers by plants is influenced not only by the type of soil, but also by the availability of productive moisture. In the studies of 1984-1987, the effect of fertilizers and irrigation on the intensity of accumulation of dry biomass by spring durum wheat was studied. The use of calculated doses of mineral fertilizers on leached chernozems on average for 1984-1987 increased the accumulation of dry biomass of spring durum wheat by 45.6%, and in combination with irrigation by another 57.4%. In the experiments of 2001-2003, calculated doses of mineral fertilizers increased the accumulation of dry biomass by 20.7% on the chernozems of the Transcamian region of the Republic of Tatarstan, and by 13.6% on the gray forest soils of the Pre-Kama region in 2005-2008