Soil crusher for seedling cultivation

The utility model discloses a soil crusher for seedling cultivation. The soil crusher comprises a rack, a charging barrel arranged above the rack, a feeding hopper arranged above the charging barrel, a rotary rod type crusher arranged in the charging barrel and a screen arranged below the charging barrel, wherein a diesel engine output shaft is in transmission connection with a rotary shaft of the crusher through a belt wheel, the charging barrel is cylindrical, each rotary rod unit of the crusher comprises three radial rods which are fixedly connected with the rotary shaft of the crusher and are uniformly distributed along the angular direction, three rotary rod units are distributed at intervals along the axial direction of the rotary shaft, the tail ends of the corresponding radial rods of the three rotary rod units are fixedly connected through axial rods, a plurality of circular isolating sleeve rings are sleeved on the periphery surface of each axial rod, and a crushing striking rod which is movably con