| 摘要 |
<p>Small tunnel-shaped greenhouse comprises spaced-apart U-shaped members which support plastics sheeting forming the walls of the greenhouse; the plastics sheeting is in the form of a tube in which the U-shaped members are inserted. Pref. the U-shaped members are provided on at least one side with portions which extend at right angles to the remainder, and are joined to each other by connectors around which engage holders which are inserted in the ground. The angled portions may consist of the perpendicularly extending ends of the U-shaped members or end members in which are inserted the ends of the U-shaped member, the angled portions of two adjacent U-shaped members being aligned with and connected to each other. Strips may be welded onto the tube parallel to its centre axis to close the ends of the tube.</p> |
