T. E. Kuleshova, O. R. Udalova, I. T. Balashova, L. M. Anikina, P. Yu. Kononchuk, G. V. Mirskaya, V. I. Dubovitskaya, V. E. Vertebny, Yu. V. Khomyakov, G. G. Panova
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引用次数: 0
Abstract
The work is devoted to the study of the photosynthetically active radiation spectral characteristics influence on the productivity and quality of lettuce and dwarf tomato adapted for protected ground. High pressure sodium lamps and LEDs emitting yellow light, pink light and close to sunlight spectrum were used as test options for plant illumination. Vegetable crops were grown under controlled conditions of intensive lightculture by thin-layer panoponics; the same irradiance was achieved in all variants. Using a light source simulating sunlight with a photosynthetic photon flux of 76 μmol m–2 s–1 in the 400–500 nm range, 130 μmol m–2 s–1 in 500–600 nm and 133 μmol m–2 s–1 at 600–700 nm made it possible to obtain an increase in productivity by 10% for lettuce and by 23% for tomato, and also led to an increase in the content of magnesium and iron in lettuce leaves and a higher content of carbohydrates, vitamin C, crude ash in tomato fruits compared to standard sodium lamps.
期刊介绍:
Technical Physics is a journal that contains practical information on all aspects of applied physics, especially instrumentation and measurement techniques. Particular emphasis is put on plasma physics and related fields such as studies of charged particles in electromagnetic fields, synchrotron radiation, electron and ion beams, gas lasers and discharges. Other journal topics are the properties of condensed matter, including semiconductors, superconductors, gases, liquids, and different materials.