Perpendicular cutting device for plant horizontal root system

The utility model relates to a cutting device for a plant horizontal root system, and provides a perpendicular cutting device for the plant horizontal root system. The perpendicular cutting device solves the problem of large experiment errors caused by unevenness and inaccuracy of plant root system cutting through an existing plant root system cutting device. A semicircular buffer body is fixedly connected to the upper end of a semicircular cylinder, the semicircular cylinder and the semicircular buffer body are coaxially arranged, cutting edges are machined at the upper end of the semicircular cylinder, and the inside diameter of the semicircular cylinder is 5cm-10cm. The cutting device uniformly and accurately cuts the plant root system, reduces the experiment errors caused by the unevenness of the root system cutting, improves experimental accuracy, and is used for cutting the plant horizontal root system.