Energy-saving and long-life LED light sources are contributing another "intelligence" to agricultural production - "tailor-made" light according to the preferences of crops or pests. This is the information that the reporter obtained from the China International LED Industry Technology Forum held yesterday.
Compared to traditional incandescent or fluorescent lamps, LED light sources based on the "growth" of semiconductor chips are inherently controllable. Controllable, not only allows designers to do as much as possible for the lights to emit a rich "expression" - unpredictable landscape lighting is the use of this point, but also for industrial and agricultural production derived a series of new uses - as long as the process With a slight change, light of any wavelength in the spectrum can be emitted on demand.
Replacing traditional light sources for seedlings is one of the directions of application. Nursery often requires artificial light to promote its growth. As we all know, the white light emitted by fluorescent lamps is a mixture of light of seven colors: red, orange, yellow, green, blue, blue, and purple, but plants do not "like" green light. Li Yongzhi, manager of the comprehensive evaluation department of Shanghai Semiconductor Lighting Engineering Technology Research Center, told the reporter, “Comparatively, plants prefer blue and red light.”
In order to increase the efficiency of light, people usually add a “filter” in front of the fluorescent lamp to filter out the green light that the plant does not like. However, whether it is directly using fluorescent lamps or adding filters, there will be a part of the energy is wasted, not as good as the LED "tailored" light for the plant.
This technique is also used to kill pests. If you can create the most suitable killing lamps and lanterns according to the light of the pests' favorite light, not only will pest killing become more effective, but also the accidental killing will be greatly reduced.
This LED can do it completely. "Either 440nm blue or 560nm red, to get them, it's as simple as putting a little more or less salt in cooking," said Li Zhizhi.
