AIR DUCT, AIR-BLASTING SYSTEM, FLOWER BUD DIFFERENTIATION PROMOTION SYSTEM, AND AIR VOLUME ADJUSTMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide an air duct capable of easily suppressing the fluctuation of the air discharged from discharge parts arranged in a lengthwise direction, to provide an air-blasting system provided with the air duct, to provide a flower bud differentiation promotion system provided with the air blasting system, and to provide an air volume adjustment method.SOLUTION: A pipe arrangement 30 comprises a pipe body 31. The pipe body 31 includes: an introduction part 32 which is connected with a blow port 20b of an air blower 20 and into which air is introduced from the blow port 20b; and a plurality of discharge parts 33 each provided with a slit 34 from which the air introduced into the introduction part 32 is discharged. The plurality of discharge parts 33 are arranged at an interval in a lengthwise direction of the pipe body 31. In addition, the pipe arrangement 30 is provided with slide covers 36 capable adjusting the total opening area of the slits 34 of the discharge parts 33.