COMBINED SEEDING UNIT Russian patent published in 2006 - IPC A01B49/06 

FIELD: agricultural engineering, in particular, equipment preferably for sowing of grass, semi-brush and brush seeds on untilled massifs, for example on pastures with natural herbage, including meadow, cereal and leguminous grasses.

SUBSTANCE: combined seeding unit has tractor, seed and fertilizer hopper with seeding units, seed guides, and shanks. Each of shanks is made in the form of two intersecting blades with aperture angle below 90 deg. Shanks are disposed in equally spaced relation on roller surface. Each shank is detachably mounted in slots on roller surface. Each shank has pair of oppositely mounted intersecting blades with recesses on end faces. Blades are fixed through end recesses within slots on roller surface. Both pairs of blades are fixed in slots by means of wedge which is disposed in additional slots above roller surface. Seeding unit is furnished with sets of replaceable shanks of different height for operation under soil-and-climatic conditions including soils with heavy, average and light mechanical composition.

EFFECT: increased efficiency in creating stable plant associations on eroded or disturbed soils, tramped pastures, forage lands, and old improved lands.

2 cl, 6 dwg