Светодиоды для искуственного освещения растений

PPFD - плотность фотосинтетического фотонного потока (photosynthetic photon flux density).

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Светодиоды для искуственного освещения растений

Сообщение Admin » 29 апр 2016 20:34

Эффективность светодиодов в освещении растений впечатляет! Возможность освещать растения только самым эффективным спектром 440нм, 455нм и 660нм делает их лидарами, лидерами без конкурентов! Светодиоды активно используют в тепличных хозяйствах многие страны мира. Исследования проводятся не только на земле но и в космосе на международных космических станциях. Да, да в космосе выращиваемые растения освещаются именно светодиодами.

  На первый взгляд все достаточно просто, три эффективных спектра, вполне определенное соотношение мощность/площадь для открытых и закрытых грунтов, высокая эффективность, ну что еще нужно? Необходимо отметить что для теплиц и оранжерей где есть относительно много солнечного света все действительно просто, а вот для закрытых грунтов двух-трех спектров не достаточно. Большинству растений необходим весь спектр в диапазоне от 380 до 800нм. Так называемая фотосинтетически активная радиация (ФАР), диапазоне от 400 до 700нм.

На нашем форуме мы будем рассматривать различные типы фитоламп и фитопрожекторов, измерять их характеристики и давать рекомендации по применению. Определим основные физические характеристики света и направим свою деятельность на разъяснения почему же люксы и люмены не годятся для измерения уровня освещенности при досвечивании растений. Необходимая единица измерения - PPFD, плотность фотосинтетического протока фотонов. Выражается в микромолях на метр квадратный за 1 секунду [µmol/m²/s].

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