SOLAR GREENHOUSE PIPING SYSTEM WITH VENTILATION AND CARBON DIOXIDE SUPPLY FUNCTIONS

The invention relates to a solar greenhouse piping system with ventilation and carbon dioxide supply functions. Specifically, the supporting keel of the solar greenhouse is hollow, and there is a plurality of ventholes on the supporting keel, passing through the hollow parts. Besides, the supporting keel is connected with an air supply device or a carbon dioxide supply device through pipelines. In the invention, the keel is designed to be hollow and provided with ventholes, so that the keel can replace the carbon dioxide supply system, thereby realizing the multifunction of the keel, that is, it can not only play a supporting role of the keel itself, but also provide carbon dioxide or air for the greenhouse. Moreover, with simple setting and low cost, the piping system provided by the invention is suitable for large-scale popularization and use. -1/2 Figure 1 The schematic diagram of a solar greenhouse provided with a piping system described in the application