APPARATUS FOR PLANT GROWING IN HOTHOUSE Russian patent published in 1996 - IPC

FIELD: agriculture, in particular, plant growing in protected ground constructions. SUBSTANCE: apparatus has vegetative units made from triangular frames 3 with trays 4 for plants 5,6, irradiation system having two groups of light sources 7,8 and air supply system with airducts 9. Irradiation sources of first group are set for supplying energy flux parts within spectral ranges of 400-500 nm, 500-600 nm respectively within the range of 15-25%, 35-45% and 35-45%. Irradiation sources of second group are set for supplying energy flux parts within the same spectral ranges within the range of 5-10%, 15-25% and 60-70%, respectively. Surface of each airduct 9 with smaller curvature radius is covered with light- reflecting layer. It allows optimum plant irradiation spectral composition to be provided. EFFECT: increased efficiency and reduced power consumption. 3 cl, 4 dwg