%0 Journal Article %T Reproduction techniques in soil fertility and dynamics of water-soluble humus in the soil under crop rotation %A Korotkikh, E.. %K soil fertility, mobile humus, the rotation %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov