Effect of long-term drainage on the content and composition of humus in soddy-podzolic soils and their mechanical fractions
The change of quantitative and qualitative characteristics of humus substances in soddy-podzolic soils and their mechanical fractions in the course of long-term drainage were studied under conditions of pronounced microrelief and different intensity of agrotechnical impacts. The features of the transformation of humus substances were characterized in the periods specific on effect nature.