The present invention relates to field of agriculture and could be used for improvement of soil quality. Product contains finely divided dry peat and sapropel having natural moisture. Product is made granulated with particle size of 250 micrometer to 10 millimetre. Each granule comprises components in weight-ratio (weight-%): peat - 40 to 70, sapropel - 30 to 60. Each granule contains interior nucleus and at least one exterior layer. Nucleus could be made from peat or sapropel and exterior layer correspondingly from sapropel or peat. Every following layer after first exterior layer, respectively exterior layer of odd number, of granule having peat-nucleus is made from peat, but every layer of even number - from sapropel. Every following layer after first exterior layer, respectively exterior layer of odd number, of granule having sapropel-nucleus is made from sapropel, but every layer of even number - from peat. The mentioned product increases soil quality and provides regeneration of humus-layer in soil.
