The utility model provides a potato front rotary
tillage floating type seeding device which comprises a rotary cultivator, a
fertilizer box, a floating device, a
chassis rack, a seed box
assembly, a land wheel transmission knot, a rotary
tillage soil covering device and a film covering device, the rotary cultivator is connected with a
tractor through a three-point suspension and a
universal joint, and the upper portion of the rotary cultivator is connected with the
fertilizer box and the floating device. The
fertilizer box is installed on the upper portion of the rotary cultivator, the floating device is connected with the rotary cultivator and the
chassis rack, the seed box
assembly is installed on the upper portion of the
chassis rack, a speed change chain wheel is arranged in the seed box
assembly, the land wheel transmission structure is connected with the chassis rack, and the land wheel transmission structure rubs against the ground to rotate to provide power for the seed box assembly. The whole
machine is hung at the rear end of a
tractor through a
tractor device, the
machine is dragged by the tractor to advance, power is provided through rotation of the land wheels to enable the speed of the seed box to be changed to complete seed metering, and the potato seeding
machine can be used for potato seeding and has the advantages of rotary
tillage, floating, ditching, fertilizing, seeding, rotary tillage earthing, film mulching and
pesticide spraying.