An agricultural machine comprises an electronic control device, an actuator, which is actuated under external power, for adjustment of at least one working parameter of the agricultural machine, and a sensor, which is connected to the control device, for detection of the vertical position of the agricultural machine. It is proposed that the control device can be operated so as to derive from the signals of the sensor which topographical zone of a number of topographical zones of a field the agricultural machine is situated in each case, and to activate the actuator as a function of the respective topographical zone.