TOOL FOR MELIORATIVE TILLAGE Russian patent published in 2014 - IPC A01B49/04 A01C23/02 

FIELD: agriculture.

SUBSTANCE: tool comprises a wedge rack, a fertiliser duct mounted on its rear part, and at its lower part - ploughshares and the vertical rotary blade mounted in the rack alignment and in front of it. Under the plowshares there is the distribution fertiliser duct coupled with the fertiliser duct with exit windows and guide vanes placed at a variable angle to the direction of motion. At the place of coupling the distribution fertiliser duct and the fertiliser duct there is a fertiliser flow divider. The tool is equipped with screw fertiliser dispenser for mixing NPK fertiliser and powdered polyacrylamide having a cylindrical regulator of seeding rate, and a high-pressure fan. The screw fertiliser dispenser drive is made from the vertical circular blade. The fan is driven by a hydraulic motor. The plowshares have upper sharpening and welding of the lower part of the blade with hard wear-resistant alloy. In the middle part of plowshares throughout their length there are fertiliser-outlet openings directed towards the plane of the plowshare at an angle equal to the angle of sharpening the plowshare blade. Over the fertiliser-outlet openings the wedge rippers are provided of the soil layer cut by the plowshare. The upper sharpened part of the rippers has welding of the solid wear-resistant alloy. The distribution fertiliser duct at the lower part is radially paired with the fertiliser-outlet openings. The length of the wedge rippers made at an angle to the plane of the plowshare overlaps the outlet part of the fertiliser-outlet openings. Opening angle of the wedge rippers is equal to the angle of friction of sliding soil on the metal. The bottom of the fertiliser dispenser is made with a slope to the screw at an angle greater than the angle of friction of sliding fertilisers on metal.

EFFECT: uniform distribution of a mixture of mineral fertilisers with polyacrylamide around arable horizon that results in improved soil properties providing receiving of high and stable yields of crops.

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