The Rizolik UHC preparation is a suspension concentrate containing strains of bulbous bacteria Bradyrhizobium japonicum Semia 5079 and Semia 5080. The preparation contains not less than 1x10^11 CFU/ml. The preparation is used for treating soybean seeds in combination with the surfactant Premax UHC. Treatment is performed once, with 1.5 liters of the preparation and 0.5 liters of Premax UHC applied per ton of seeds. The preparation is intended to increase soybean crop yields by effective nitrogen fixation by bacteria. The manufacturer of the preparation is the company 'Rizobacter Argentina' (Rizobacter Argentina S.A.), located in Buenos Aires, Argentina. The preparation is used in agricultural production and improves the growth and development of soybean plants through bacterial inoculation.