Precision seeder with functions of deep scarification and quantitative and layered fertilization for corns

The utility model belongs to the technical field of seeding machinery, and discloses a precision seeder with functions of deep scarification and quantitative and layered fertilization for corns. The precision seeder is mainly technically characterized by comprising a large rack, wherein a fertilizer bin is arranged on the large rack and composed of a bottom fertilizer bin and a seedling lifting fertilizer bin; a base fertilizer dosing device and a base fertilizer discharge pipe matched with a furrowing blade for deep scarification and layered fertilization are arranged on the bottom fertilizer bin; at least one base fertilizer outlet is formed in the lower part of the base fertilizer discharge pipe; a seedling lifting fertilizer dosing device and a seedling lifting fertilizer discharge pipe are arranged on the seedling lifting fertilizer bin; a seedling lifting fertilizer layering furrowing blade is arranged at the bottom of the seedling lifting fertilizer discharge pipe; and at least one seedling lifting fertilizer outlet is formed in the lower part of the seedling lifting fertilizer discharge pipe. Different requirements of corns on the fertilizers at different growth stages can be met when different fertilizers are simultaneously applied by the seeder, a soil space is formed between the seedling lifting fertilizer and the base fertilizer by trenching twice in the seeding process, and the depth and the uniformity of the seedling lifting fertilizer and the safety of the seed are ensured.