HOTHOUSE Russian patent published in 1994 - IPC

FIELD: plant growing. SUBSTANCE: hothouse comprises screens with revolving shutters installed above light sources, and inclined frames interconnected in pairs at the top and carrying plant germinators. Shutter screens are arranged in three tiers. Shutters of lower screen are made of a transparent material, those of upper screen are coated with light-reflecting layer, and middle screen shutters are installed on Λ-shaped frames. Light sources are arranged between middle and lower screens and rest on support posts mounted on each pair of inclined frames. EFFECT: higher cropping power and better quality of cultivated plants achieved by optimization of light distribution within vegetation space. 2 cl, 2 dwg