The present invention constitutes a system for the locally exact application of substances on country - and forestry land and providing a corresponding method. The system comprises at least one more compartment rotary-wing aircraft, which at least one electronic control device for controlling the flight movements, which contains the more compartment rotary-wing aircraft in a self-sufficient manner on predetermined paths deflects. The electronic control device contains at least one processing unit, at least one receiver for signals of a global satellite navigation system for position determination and an inertial measuring unit for the detection of movement data of the mehrfachdrehflüglers. The processing unit, the data of the receiver is calculated according to the process of echtzeitkinemazik with the data of a base station as well as with the measuring data of the inertial measurement unit to improve the accuracy of the position measuring data, so that the electronic control device the more compartment rotary-wing aircraft for the introduction of substances on an agricultural surfaces can steer sufficiently accurately.
