PURPOSE: To ensure the reaping and conveying of bean grain culms with a low crop unit.

CONSTITUTION: The objective reaping part for a combine harvester having a low crop unit 20 equipped with a pair of right and left conveying belts 21 and 21, long in the front and rear directions, having lower terminal ends than the top surface of an auger 9 and the low front ends, rising toward the rear ends, nipping bean grain culms from both right and left sides and conveying the grain culms to the rear and reaping blades 22 attached to downward positions in the front ends of the conveying belts 21 and 21 at positions on the front side of the auger 9 and under a raking in reel 12 in a combine harvester for reaping grain culms raked in with the raking in reel 12 with reaping blades 10, bundling the reaped grain culms with the auger 9 rotated around a transverse shaft, conveying the grain culms to a thresher 3 in the rear with a rear conveyor 16, reaping and threshing the grain culms.