| 摘要 |
A multi-span greenhouse wherein a roof and props composed of a number of frames are assembled as a unit, a number of thus-assembled unit are arranged at given intervals into a tunnel shape and comprises, in order to dispose two or more layers of vinyl therein, a greenhouse framework having a multiple vinyl installation region, a rectangular hatch formed in the top area of the roof and having an opening and closing device capable of opening and closing in a widthwise direction of the roof, a vinyl fixing means composed of a fixer and a gripper or the like in order to easily fix vinyl layers to the frames of roof and props, a rainwater receiving means installed in a groove where the lower ends of the roof of the greenhouse framework meet each other and having a water receiver body for receiving and guiding water flowing from the roof, and dewdrop receiving means installed between props below the rainwater receiving means and formed with a water channel for receiving and guiding dewdrops from the vinyl layers in the multiple vinyl installation region. |
