<；P>；PROBLEM TO BE SOLVED: To provide a greenhouse culture system, capable of supplying gas to a desired part of a plant without obstructing plant growth. <；P>；SOLUTION: This greenhouse culture system 1 includes using a cultivation ridge or bed 3 of at least one row, set in a greenhouse 2. The system has a first duct 11 which is made of a soft film, arranged along the ridge or bed 3 so as to pass the vicinity of a plurality of plants 50 raised on the ridge or bed 3, and formed with a plurality of holes so as to emit gas toward a plurality of the plants 50, a second duct 12 which is harder than the first duct 11, and arranged along the ridge or bed 3 so as to pass a place away from a plurality of the plants 50 raised on the ridge or bed 3, a plurality of third ducts 13 which intermittently connect the first duct 11 and the second duct 12, and a blast device 20 which supplies gas to the second duct 12. Gas is emitted from a plurality of the holes of the first duct 11. <；P>；COPYRIGHT: (C)2009,JPO&INPIT
