Тип публикации: статья из журнала
Год издания: 2025
Идентификатор DOI: 10.33383/2025-013
Ключевые слова: variable irradiation spectrum, energy efficiency of irradiation modes, dimmable LEDs, DNaT-600 irradiators, tomato productivity, quality of tomato produce
Аннотация: The paper reports an experimental photobiological study estimating the effectiveness of different spectral modes of photosynthetically active radiation (PAR) for cultivating tomato vegetables using LED irradiators as electrical grow lighting. Variety of Tomato cv. Katya F1 was used in the study. The purpose of the study was to compПоказать полностьюare the photobiological efficiency of radiation from dimmable LED irradiators with an adjustable spectrum and high-pressure sodium lamps (DNaT-600). PAR irradiance at the upper leaf level was maintained constant in the treatment (using LED) and control (using DNaT-600) and was (425 ± 15) μmol/(m2·s). Energy consumption was measured using electronic electricity meters separateIly for the control and treatment part of experiment. The characteristics of plant growth and development were recorded throughout the experiment. The tomatoes were analysed for nitrate, sugar, and vitamin C contents. The study showed that during the growing period of 80 days, a twofold saving in energy consumption was achieved in the treatments with LEDs compared to the control. At the same time, the yield of vegetables per illuminated area in the control was 63.9 kg, which exceeded the average values of this parameter in the treatments by 1.4 times. Taking into account the consumed electricity, the cost of the tomatoes produced in the treatment was lower by 38 % and amounted to 42.2 kW·h and in the control to 58.1 kW·h per one kg of tomatoes. The assumption is substantiated that the reasons for differences in tomato yields may be associated, first of all, with different qualitative and quantitative characteristics of infrared radiation in LED irradiators and sodium lamps. Ways to improve LED irradiators to increase the photobiological efficiency of their radiation are outlined.
Журнал: Light & Engineering
Выпуск журнала: Т.33, №4
Номера страниц: 93-102
ISSN журнала: 10689761
Место издания: Moscow
Издатель: ООО "Редакция журнала "Светотехника"