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 two tiers. Shutters of lower screen are made of a light-transparent material and those of upper screen are coated with light-reflecting layer. Light sources are arranged between screens and are mounted on support posts secured on inclined frames. EFFECT: higher quality and cropping power of grown plants due to optimization of light distribution, improved microclimate in vegetation zone, and a lower power requirement. 3 cl, 2 dwg