Preliminary data based on the notification from the Danish authorities :
Arriving at the destination, the pilot experienced that adding engine power had almost no effect. Engine power remained at nearly idle power.
The aircraft came in high on short final to runway 21. The pilot aborted the landing attempt, and had to make a forced landing in a stubble field southwest of the airstrip.
The landing gear collapsed, the propeller, and maybe the right wing came in contact with the ground.