To solve a problem that since conventionally, a conveying unit for a bulb crop adjusting machine is constituted of a pair of a right and left horizontal revolving belt conveying units, when bulb crops are supplied, the bulb crops have to be supplied in an inverted state one by one from the tip part of the conveying unit, consequently the conveying unit is inefficient.

The bulb crops supplied in a state of falling sideways supplied to the bulb crop conveying unit can be changed in position to an inverted state in the middle of transportation, a plurality of bulb crops are supplied collectively in a position of falling sideways when supplied, stems and leaves and fibrous roots can be cut in an inverted state, a supply operation efficiency is improved and adjustment operation is smoothed. The structure of the bulb crop conveying unit has a constitution in which a horizontally revolving one belt conveying unit is laid at one side of a right and left opposing bulb support conveying units, a longitudinally divided belt conveying unit is arranged at the other side, the first transportation has a longitudinally revolving belt structure the second transportation has a horizontally revolving structure and the position is changed at the delivery part of the first and the second belt transportation structures.