Soil respiration tester

The utility model relates to the field of measuring equipment, and provides a soil respiration measuring instrument which comprises an instrument body, a detection pipeline, an insertion piece and a ventilation piece. One end of the detection pipeline is connected with the instrument body, and the other end of the detection pipeline is connected with the ventilation piece; the ventilation piece is detachably connected with the insertion piece and is communicated with the insertion piece; the inserting piece used for determining the soil measuring range is inserted into soil; wherein the insertion piece comprises a first insertion part and a second insertion part; the first inserting part is provided with a first measuring port, the second inserting part is provided with a second measuring port, and the first measuring port is communicated with the second measuring port; the outer wall of the first inserting part is in sliding connection with the inner wall of the second inserting part, so that the first inser