METHOD OF INCREASING PRODUCTIVITY AND PROFITABILITY OF GROWING CUCUMBERS IN PROTECTED GROUND CONDITIONS IN NORTH

摘要

FIELD: agriculture.;SUBSTANCE: invention relates to agriculture, particularly to production of vegetables in protected ground, in greenhouses with automatic control system of environmental factors. The method of cultivation of cucumbers under conditions of the Far North, includes supplementary lighting of plants grown in protected ground, by the main sources of artificial light, located at the level of upper tier of leaves. The lateral supplementary lighting with additional sources of artificial light is carried out to maintain the physiological activity of leaves of the middle and lower tiers, ensuring the fruit formation. The additional lateral sources of light are mounted on height-adjustable suspensions in cenosis at the level of the tier, in which the intense fruit filling is carried out. The duration of supplementary lighting by lateral light sources is from 3 to 12 hours taking into account the fruit-load and intensity of natural and artificial lighting. The flux density of the incident photosynthetic active radiation is not more than 350 mcmol/m²s.;EFFECT: increased efficiency of use of artificial supplementary lighting, accelerating of formation of crop and increase in productivity.;4 dwg, 1 tbl