Features of many years dynamics of soddy-podzolic soils properties under the impact of long-term drainage in different agroecologikal conditions
Features of the variation of the acid-base and humus state indicators in soddy-podzolic soils during prolonged drainage are characterized, taking into account the action factors other than meliorative ones, i.e., topogenic, technogenic, agrogenic, meteorological. The direction and degree of changes in indicators, depending on the dominance of individual factors or their joint manifestation, are traced. In general, over a 30-year of research, a clearly expressed negative trend in the change in the humus quality was revealed, which was due to the long-term (over the past 25 years) agricultural use of reclaimed soils without the application of agrochemicals.