THE ROLE OF SOIL PROTECTION CROP ROTATIONS IN ECOLOGICAL STABILITY OF SLOPES
The article presents the results of research conducted in the years 2016-2018 of the Studies were conducted in multifactor stationary experiment, located on the side of the beam, a Large Log, Aksai district, Rostov region, in the contour and landscape of the territory of the slope up to 3.5-4.0°. Two crop rotations of different designs with different percentages of perennial grasses and pure steam were studied. The aim of the research was to study the balance of humus depending on the degree of soil washout and identify the optimal ratio of crops in soil conservation crop rotations for environmental stabilization of eroded slopes of the Rostov region. Two main tillage systems and three levels of plant nutrition were studied. The influence of perennial grasses on the processes of soil runoff and flushing was studied, the coefficient of susceptibility to erosion processes was calculated. The role of perennial grasses in stabilization of humus balance on erosion-dangerous slope is noted. The doses of organomineral fertilizers in maintaining the humus balance were determined. The data obtained show that the use of 40 % fields of perennial grasses at fertilization dose of cattle manure 5 t + N46P24K30 maintains the balance of humus at the level of + 283-317 kg/ha, and increasing the dose of fertilizer to cattle manure 8 t + N84P30K48 - to 1068-1121 kg/ha.