| 摘要 |
The cultivator consists of lines of plant supports, made from mineral wool or polyurethane. Between each pair of adjacent supports, are arranged two pipes, in which circulates the energy carrying fluid. The pipes are held at a small distance from the ground, which is covered with a film, by the cross pieces. The cross pieces are each formed as a central base (6) linking together the two mounting pedestals (7,8). Each pedestal has its upper surface formed into a cylindrical shape (9), with the open face directed upwards. A retaining clip (17) is attached to the horizontal part (15) of the upper surface, by fasteners (20). ADVANTAGE - It results in a low cost system, which can be used repeatedly. |
