1. A mixture for restoring and improving soil fertility, containing an organic component and a mineral component, characterized in that the organic component is selected from the group: sapropel, bottom silt of freshwater reservoirs, peat, vegetable crop cake or a mixture of any two, three or all four of these substances and/or materials, the mineral component is selected from the group: bentonite, trepel, glauconite or a mixture of any two or all three of these minerals and/or rocks, wherein the ratio of the components of the dry mixture in wt. % is: organic component 70-80 mineral component the rest. 2. The mixture according to claim 1, characterized in that it is granular with a particle size distribution of 0.01-5.00 mm.