Deep soil stratified sampling device in soil investigation sampling

The utility model discloses a deep soil stratified sampling device in soil survey sampling, which comprises a fixed seat, the lower part of the outer surface of the fixed seat is fixedly connected with a supporting seat, the middle part of the upper end of the fixed seat is fixedly connected with a connecting seat, and the lower end of the fixed seat and the upper end of the connecting seat are respectively provided with a movable groove and an adjusting groove; an adjusting mechanism is arranged in the middle of the lower wall of the connecting base, a sampling mechanism is arranged in the middle of the upper wall of the movable groove, a threaded insertion rod is connected to the front upper portion of the outer surface of the connecting base in a penetrating and threaded mode, a rotating handle is fixedly connected to the front end of the threaded insertion rod, and first sliding grooves are formed in the left wall and the right wall of an adjusting groove. According to the layered sampling device for the