Diploma thesis " Nutrient content and character of soil colloidal complex in selected soil types " is aimed at chemical properties of Haplic Chernozem, Haplic Luvisol, Haplic Cambisol, Gleyic Stagnosol and Calcaric Leptosol. Obtained results were compared with Systematic Soil Survey (1965 -- 66). Loss of humus and higher acidity was determined in Haplic Chernozem. Other soil types were low or middle low in nutrient content. Quality of humic substances was also low and there is necessary to improve nutrient regime and humus content in arable soils.