<；P>；PROBLEM TO BE SOLVED: To provide a new greenhouse facility technique for greatly reducing the frequency of high-altitude work, allowing installation at a low price, always ventilating to be completely free from the need of troublesome temperature control work, and surely preventing approach of noxious insects and harmful birds. <；P>；SOLUTION: A plastic greenhouse is obtained by sticking a coating sheet 2 made of a synthetic resin film and opening top panel air holes 20, 20, ... at every prescribed size in the ridge direction in a range of each of arch pipes 11, 11, ..., to the external surface of a tunnel-like framework 1 made by connecting a plurality of the arch pipes 11, 11, ... arranged in the ridge direction by a plurality of ridge direction straight pipes 12, 12, ..., and attaching a belt-like moth proofing net 3 just onto the top panel air holes 20, 20, ..., and inserting gutter mechanism 4, 4, ... into a place in the slightly vertical right under direction of each of the air holes 20, 20, ... of the top panel. <；P>；COPYRIGHT: (C)2011,JPO&INPIT
