FIELD: agriculture. SUBSTANCE: basic tillage unit has section with active working tools and subsurface rippers. At least one additional module with similar working tools and subsurface rippers is connected to basic tillage unit through compensating device. Such construction allows known basic tillage apparatus for different pulling-type power units to be unified and width of unit to be changed by connecting or disconnecting additional module (modules) during basic tillage process depending on working conditions. EFFECT: wider operational capabilities and simplified construction. 6 cl, 2 dwg
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