FIELD: agriculture.
SUBSTANCE: according to the method regulation for this type of plant values of percentages of energy in various spectral bands of photosynthetically active radiation (PAR) are set. Range of PAR is isolated from the total flux, energy flow in separate spectral bands of PAR is measured. The percentages of energy in various spectral bands are calculated in relation to the energy of PAR. The value of flow energy consumption of optical radiation is determined by the formula 
where 
and 
are respectively, regulatory, and measured percentages of the energy flux of radiation in the i-th spectral band.
EFFECT: method enables to increase the information content at measurement of value which characterises the energy efficiency of irradiation process.
2 dwg, 1 ex
