Air-suction type miniature potato precision seeder

The utility model relates to an air-suction type miniature potato precision seeder which comprises a stander, a seed box, a land wheel, a seed opener and an earthing up disc, and further comprises a fan, a chemical box, a sealed air suction cavity, an air-suction seed discharging disc, a seeding depth control mechanism and a fallen seed grasping unit, wherein the fan is fixedly connected to the stander; the fan is communicated with the sealed air suction cavity by virtue of an air suction pipeline; an air suction hole is formed in the side face of the sealed air suction cavity; the seed box is fixedly connected to the stander; a seeding hole is formed in the lower end of the seed box; the air-suction seed discharging disc is arranged on the side face of the sealed air suction cavity; a round seed suction hole is formed in the air-suction seed discharging disc; the round seed suction hole is formed in the position, provided with the air suction hole, of the side face of the sealed air suction cavity; the fallen seed grasping unit is arranged on the side lower part of the air-suction seed discharging disc; the fallen seed grasping unit is of a cylindrical structure; a plurality of seed grasping grooves are uniformly distributed in the cylindrical surface of the cylindrical structure; and the seeding hole of the seed box is located above the round seed suction hole at the uppermost end of the air-suction seed discharging disc.