Abstract: A dual-channel combine harvester suitable for strip-like compound planted soybeans and corns and a method thereof are provided. The combine harvester includes a mobile harvester body and a combine cutting table portion installed on the mobile harvester body. The combine cutting table portion include a main bracket which is provided with a soybean cutting table and a corn picking table. The main bracket is rotatably installed on the mobile harvester body, and a first angle adjusting mechanism is installed between the main bracket and the mobile harvester body. The soybean cutting table is provided with a first bracket fixed with respect to the main bracket. The corn picking table includes a second bracket which is rotatably installed with respect to the main bracket, and a second angle adjusting mechanism is arranged between the second bracket and the main bracket.

Abstract: An automatic steering device of an agricultural machine is provided, which is connected with a steering axle of the agricultural machine and comprises: a data acquisition unit for acquiring data information of the agricultural machine, the data information comprises an actual steering angle value, a travelling position and a travelling direction; a driving unit for providing a rotating torque; a steering unit connected with the driving unit and the steering axle and used for transmitting the rotating torque to the steering axle; and a control unit connected with the data acquisition unit and the driving unit, used for obtaining a steering angle value according to the data information of the agricultural machine, and controlling the driving unit according to the steering angle value. The embodiments have simple structure, can be suitable for the agricultural machine with different steering angle ranges, and have high efficiency and simple operation.