Keywords:  eroded soils, crop rotation, fertilizationsystem, erosion resistance, erosion speed of water flow 

 Мелиорация.– 2024. – №3 (109). – P 45–53

Soddy-podzolic soils immediately after mechanical treatment are characterized by very low erosion resistance. The erosive velocity of the water flow does not exceed 11.1 cm/s. Soil resistance to erosion decreases with increasing degree of erosion degradation. The use of eroded soils in soil-protective grass-grain crop rotations helps improve their resistance to erosion. Moderately and highly eroded soils on loess-like loams in grain crop rotation were characterized by lowV∆p(16.5–18.5 cm/s), and in grass-grain crop rotation with alfalfa cultivation – high and medium V_∆p (33.1 and 29.8 cm/s). With the organomineral fertilizer system, an increase in the anti-erosion resistance of soils was observed compared to the mineral fertilizer system. The application of lime ameliorants against the background of an organomineral fertilizer system did not lead to an increase in V_∆p. A close correlation has been established (r = 0.76) between the erosive velocity of water flow and the weighted average diameter of water-resistant aggregates in the soil.