LED is an eye-catching light source in the 21st century, and it has broad lighting prospects. This article first briefly introduces the development of LED, then analyzes its basic principles, explains the feasibility of LED as a lighting source, and finally explains and prospects the market application of LED.
The life activities of plants are inseparable from the light, but because of the cover of agricultural film or glass, the light transmittance in the shed is affected, especially the insufficient light in continuous cloudy days, which can lead to the decline of photosynthesis. There are two ways to control the light environment in the production of greenhouse plants: one is to adjust natural light by hanging reflective curtains and choosing plastic films or glass panels for greenhouse covering materials.
In the field of plant-specific LED light source systems, China has successfully developed a "flexible LED light source system for plant photobiology research", which was named LEDPlant and has been successfully applied to the 863 project undertaken by the research team In the experimental study. This is a new type of plant growth supplement light. After application tests, the wavelength of the plant light is very suitable for plant growth, flowering, and fruit. The plant growth light is the world's leading high-precision technology that uses semiconductor lighting principles and is dedicated to the production of flowers and vegetables Products, generally indoor plants and flowers, always grow worse. The main reason is the lack of light irradiation. The LED lamp suitable for the required spectrum of plants can not only promote their growth, but also prolong the flowering period and improve the quality of the flowers. . The application of this high-efficiency light source system to greenhouses, greenhouses and other facilities for agricultural production, on the one hand, can solve the disadvantages of insufficient sunlight leading to the decrease in the taste of tomatoes, cucumbers and other greenhouse vegetables, on the other hand, it can advance the winter solanum and fruit vegetables to the Spring Festival Before and after the listing, so as to achieve the power of off-season cultivation.
After doing detailed research and reading some academic papers, it is proved that LEDs are effective. Generally, LED plant lights emit red and blue light, basically red and blue, because the photosynthesis of plants is most sensitive to red and blue light. It absorbs more red and less blue. Red light generally promotes the growth of mosaic and blue light promotes its differentiation. LED lights rely on controlling the ratio of red and blue lamp beads to accurately determine the ratio of red and blue. At present The red-to-blue ratio of LED plant lights on the market ranges from 3:1 to 8:1, and you can also choose to customize. According to the relevant academic papers I read, the ratio of red to blue light is more appropriate between 5:1 and 10:1. I chose a 5:1 ratio of red to blue light. According to the seller, they specialize in exporting to the United States. I also investigated, and indeed there are LED plant lights on foreign eBay that are the same as the domestic seller.
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