A promising direction to reduce energy con-sumption in greenhouse technology is the devel-opment of more advanced designs, techniques and modes of operation of technological equipment, in particular systems of artificial irradiation. Require-ments of lighting methods of calculation of irradia-tors for greenhouses regulate the height of the suspension point sources of radiation is not below 0.5 m above the receiver. This fact involves a high proportion of infrared radiation irradiators, injurious to plants. The high location of irradiators leads to the necessity of increasing the installed capacity of the systems of exposure and, as consequence, in-creases energy intensity greenhouse technologies. The calculation showed that by reducing the height of the radiator to 0.22 m it is possible to achieve a twofold increase in the level of irradiance from 50 W/sq.m of photosynthetically active radiation to 100 W/sq.m of photosynthetically active radiation, to ensure optimal photosynthesis for crops radish when the radiation irradiator in the wavelength range 600-700 nm. The solution to the problem of reducing the energy intensity of crop production on the example of radish cenosis by changing parame-ters of the traditional patterns of exposure and the drainage of excess thermal energy from the irradia-tor at the same time allows a twofold increase in irradiance to increase the yield of radish by 2.2 kg/m2 when co-respect for the value of the ratio of minimum irradiance of 0.8.
system of ‘feed-vegetation unit’, the ratio of minimum irradiance, method of calculation of irradiating installations, energy efficiency
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