Plant stalk diameter measuring device and method

The invention relates to the technical field of agricultural science, and provides a plant stem diameter measuring device and method.The plant stem diameter measuring device comprises a pressure electrode, a pressure measuring module and a data acquisition module, and the pressure measuring module is connected with the pressure electrode and the data acquisition module; the pressure electrode is attached to the surface of a plant stem; the pressure measurement module is used for acquiring measurement data of the pressure electrode; the data acquisition module is used for acquiring measurement data so as to determine the diameter of the plant stalk according to the measurement data. The pressure electrode and the pressure measuring module are combined to form the pressure sensor, the pressure sensor is used for replacing a diameter sensor to measure the diameter of the plant stalk, namely, the diameter of the plant stalk is measured by measuring pressure, and the pressure sensor is easy to operate, light, flex