CHANGE OF PHYSIOLOGICAL PARAMETERS OF SPRING WHEAT VARIETIES FROM TECHNOLOGY OF THEIR CULTIVATION
The presented research results were conducted in the conditions of the Central Non-Chernozem regions of Russia on soddy-podzolic cultivated soil. The dependence of the productivity of spring wheat varieties on the value of the photosynthetic potential (PhP), which is regulated by technological elements during cultivation, is shown. As a result of the research, a differentiated level of photosynthetic potential was established in million m² of days for different varieties of spring wheat using basic, intensive and high-intensity technologies. The composing value of the formation of the harvest of spring wheat is the net productivity of photosynthesis (NPPh). The NPPh establishes the optimal course of the photosynthetic activity of crops for the zone, which makes it possible to determine the necessary conditions for the growth of plants in a specific period. To carry out technological measures effectively. It is established that the magnitude of the PhP depends on the degree of wetting of the growth of plants. Under highly hydrated conditions of PhP, the maximum yield was from 0.84 to 1.03 kg of grain per day from one thousand m2 of the photosynthesizing surface. Under dry conditions 1.56-2.05 kg of grain/thous. m2 per day. This indicator reached its maximum under mildly arid conditions, and, depending on the variety, ranged from 2.32 to 2.49 kg of grain thousand square meters per day.