Soil sample stratified-sampling device and sleeve head

The utility model discloses a sleeve head of a soil sample stratified-sampling device. The sleeve head comprises a round tube on the wall surface of which hook-shaped clamping grooves are formed symmetrically; the hook-shaped clamping grooves comprises a straight opening flute and a hook groove; the straight opening flute extends to one end of the round tube; and the other end of the round tube is tightly connected with a baffle provided with a central hole. The utility model further discloses a soil sample stratified-sampling device which comprises a sleeve head and a sampling tube, wherein the sampling tube comprises a round tube, the outer wall surface at one end of the round tube is connected with a clamping head symmetrically, and the clamping head of the sampling tube and the hook-shaped clamping groove of the sleeve head are arranged correspondingly. The clamping groove design is adopted in the soil sample stratified-sampling device, the sleeve head and the sampling tube, thereby being convenient for r