In 2018, the demand for semiconductor lighting applications can be described as the East side sunrise West rain, UVLED ultraviolet lighting and other traditional alternative markets are accelerating penetration, and emerging market segments such as plant lighting have become market hotspots. It will also focus on the seven key development areas of special cold light sources such as "LED light source energy-saving light source, three-dimensional soilless cultivation, light-temperature coupled energy-saving environmental control, nutrient liquid regulation, network-based intelligent management, artificial light plant factory, natural Special cold light source plant plant integrated demonstration, etc."

As a key area of development in the "LED energy saving light source", our UVLED in the factory field can be said to be pivotal and vast prospects. Production efficiency is directly related to the quality of light conditions. Then, the saturation of light acquisition depends on the influence of Yanzhongchengdu. Similarly, the speed of growth is directly related to the weather. There are many advantages in the concept: high production efficiency, good controllability, and broad application prospects. In plant factories, people use electric light sources to extend and supplement the lack of sunlight for plants, provide the required light, and apply technical means and equipment such as soilless cultivation, special nutrient fluids, ventilation, and constant temperature and humidity. It is undoubtedly an efficient, harmless, high-tech agricultural model.

Different spectra in sunlight contribute to the photosynthesis of plants in different sizes. Only light in the range of 400 to 700 nm radiates effectively from plant light and reacts with the synthesis of carbohydrates in plants. According to the distinction between visible and invisible light, invisible light contains a wavelength band with a wavelength of less than 380 nm. This band is called "ultraviolet light"(UV for short), which effectively radiates plants. UV and far-infrared light have control over plant growth and development. function, It has important application value to agricultural production.

The UV radiation of plants in traditional agricultural factories is also caused by the UV radiation components contained in traditional supplementary lamps and the extremely uneven distribution of light, and it also affects the growth of plants in order to achieve accurate application of ultraviolet light(UV). At present, traditional agricultural cultivation or artificial cultivation uses fluorescent lamps, mercury lamps, high-pressure sodium lamps and other lamps as the main spectrum of red and blue light sources emitted by LEDs, and it is obviously lacking in the composition of ultraviolet spectroscopy.

Due to the lack of ultraviolet light in the facility, which leads to serious problems in plant growth and quality, the demand for the composition technology of the optimized and efficient spectrum of light filling is very urgent. As a new type of energy saving, controllable, adjustable and efficient application light source, LED has made breakthroughs and application technology has been continuously extended at the core technical level. The use and regulation of ultraviolet light in plant plants is very important for ensuring high quality and high yield. The use of artificially controlled ultraviolet(UV) light sources to supplement UV radiation technology can reduce the chemical methods that lead to plant growth and improve plant quality. It is an important guarantee for the production of green organic foods.

The application goal is mainly to control the growth of plants and improve the quality of crops, such as increasing the content of antioxidants in vegetables, increasing the accumulation of secondary metabolites in medicinal crops, and accelerating the synthesis and accumulation of colored substances in flower leaves and petals. In order to control the effect of ultraviolet(UV) light, the amount of UV radiation must be controlled well, such as the use of short-term low-dose, intermittent repeated irradiation, pre-mining short-term irradiation and other methods.

Therefore, the emergence of UVLED and the large-scale application of artificial light in various plants in the field of agricultural lighting. Its outstanding advantages of energy conservation, environmental protection, cold light sources, long service life, small size, pure light quality, high light efficiency, rich wavelength types, easy spectral energy Compounding, and convenient modulation will certainly help in the new round of plant factory models. It can make more rational use of light sources and wavelength bands to achieve different needs of different plants for light.

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