%0 Journal Article %T On the unity of the processes of photosynthesis, nitrogen fixation and soil formation %A Ovsyannikov, Y.A. %K system approach, cognition of the surrounding world, photosynthesis, symbiotic nitrogen fixation, associative nitrogen fixation, microorganisms, root secretions, soil formation, system, ecosystem, agroecosystem, agrobiogeocenosis, biosphere, rhizosphere, soil fertility, mineral fertilizers, organic substances, photosynthesis products, ecological and biospheric agriculture %J Agrarian Bulletin of the %D 2022 %N 216 %P 7 %I Ural State Agrarian University