Precise seeder of experimental area

The utility model discloses a precise seeder of an experimental area. A storage box is arranged on a support; a roller is arranged under the support; the storage box is connected with a screening pipe; a classifier is arranged at the lower end of the screening pipe; the particle classifier is connected with a particle classification tank; the particle classification tank is connected with a plough share; a balancing device is arranged on the plough share; a plow harrow is arranged on the rear part of the plough share. The precise seeder of the experimental area is capable of precisely setting number, depth and distance of seeded particles; the parts of the precise seeder of the experimental area are mutually fastened through buckles to operate commonly; the precise seeder of the experimental area can precisely work in a small range; the parts of the precise seeder of the experimental are can operate in a large area in the absence of the particle classifier; the precise seeder of the experimental area can be c