HOTHOUSE Russian patent published in 1997 - IPC

FIELD: agriculture; plant growing in protected ground. SUBSTANCE: the hothouse has frames with cross-bars 4, air supply system and illumination facilities. Supported by cross-bars 4 are trays 5 designed for growing plants. Hollow frame cross-bars 4 are connected to each other to form a common air duct and are adopted to be coupled with a compressed air source. Cross-bars 4 are provided with holes 8, through which they are associated with tubes 12 fixed on the frames and intended for plants 7. The inner surfaces of the tubes are covered with light-reflecting material. Trays 5 designed for growing plants 7 are located under tubes 12. Plants are exposed to direct and reflected light fluxes 19 and 20, respectively, emitted by light source 13. Carbon dioxide, warm or humid air or their mixture is fed from the compressed air source along a pipeline and a manifold through holes 8 in hollow cross-bars 4 into tubes 12 to plants 7. EFFECT: improved feed of air and carbon dioxide to plants. 5 cl, 4 dwg