Fecha de publicación: 31/10/2023 Fuente: WIPO "tobacco agriculture" The utility model belongs to the technical field of tobacco agricultural test equipment, and particularly relates to a tobacco crop growth observation system. The device comprises a cultivation device, an infrared transmitting device and an infrared receiving device, wherein a cultivation point is arranged in the middle of the cultivation device; the infrared transmitting device comprises a vertical transmitting plate and a transverse transmitting plate, the infrared receiving device comprises a vertical receiving plate and a transverse receiving plate, and the vertical transmitting plate and the vertical receiving plate are oppositely arranged on the left side and the right side of the cultivation device; the transverse transmitting plate and the transverse receiving plate are annular shapes matched in size, the transverse receiving plate is arranged on the cultivation device and located on the same horizontal plane with the cultivation point, the cultivation point is located in the annular center of the transverse receiving plate, and the transverse transmitting plate is arranged above the cultivation device and corresponds to the transverse receiving plate. The device is convenient to operate, and can automatically observe the plant height and the leaf length of crops and record data in tobacco crop growth research, so that the accuracy of the measured data is improved, and the workload of researchers is reduced.