LED plant lighting development faces four major problems

At the beginning of last month, President Xi Jinping visited the 12th five-year scientific and technological innovation achievement exhibition in Beijing Exhibition Hall. He stopped in front of the intelligent LED Plant Factory and pointed out the beneficial role of plant factories in solving people's livelihood problems and desert planting; Not long ago, Xinjiang intelligent LED Plant Factory officially started operation; On January this year, by Institute of Botany, Chinese Academy of Sciences and Fujian Sanan group, at the beginning of last month, President Xi Jinping visited the 12th five-year scientific and technological innovation achievement exhibition in Beijing Exhibition Hall and stopped in front of the intelligent LED Plant Factory to examine it, it points out the beneficial role of plant factories in solving people's livelihood problems and desert planting; Not long ago, Xinjiang intelligent LED Plant Factory officially started operation; In January this year, the plant factory project jointly established by the Institute of Botany of the Chinese Academy of Sciences and Fujian Sanan Group Co. , Ltd. has been settled in Hutou County. As an important part of the plant factory, LED plant lighting has indeed become more and more dazzling. At present, many lighting companies are accelerating the layout of plant lighting, and a competition without smoke is quietly going on. I. LED light source will play a great role in agricultural lighting. Agricultural lighting with LED light source has been vigorously developed in developed countries such as Europe and the United States. Governments of various countries are actively promoting LED agricultural lighting, china's LED technology in the field of agricultural lighting has emerged in recent years. In fact, LED light sources will play a huge role in agricultural lighting, which can completely replace natural lighting and traditional artificial lighting. The application of LED light source in agricultural lighting mainly includes plant production, aquaculture, microalgae culture, edible fungus production, etc. Visible light spectrum at 380- Between 760nm, this wavelength can cause chemical changes after being absorbed by plant body molecules, it has a wide range of regulatory effects on plant growth, physiological metabolism, morphogenesis, photoperiod response and nutrition quality. Light environment is one of the indispensable physical environment factors for plant growth and development. Controlling plant morphogenesis through light quality regulation is an important technology in the field of protected cultivation. The light spectrum has a direct impact on plant photosynthesis, mainly red light and blue light, red light is mainly concentrated in 630- 660nm, its role is to help plants blossom and bear fruit, blue light is mainly concentrated in 450- 470nm, its function is to help plants grow stem leaves. Therefore, the wavelength of LED Agricultural lighting source is very suitable for plant growth, flowering and fruiting. Generally, indoor plants and flowers will grow worse and worse with the extension of time. The main reason is the lack of light irradiation. The LED lamp irradiation suitable for the required spectrum of plants can not only promote their growth, but also prolong the flowering period, improve the quality of flowers. II. Difficulties faced by LED plant lighting 1. At present, the domestic LED plant lamp market is still in its infancy, lamps applied in the field of plant growth not only have the problems of high cost and weak light penetration ability. There are still problems such as messy products, nonstandard production design, lack of unified product standards and quality management. 2. The difficulty of LED plant lighting technology is not very great. The key is the lack of comprehensive talents who understand biological training knowledge and LED technology. The technology and production process required for LED plant lighting are not different from general lighting. The key is the selection of chip spectrum. 3. Although the chip technology related to plant lighting has matured, different plants have different requirements for light irradiation and different living environments, this requires enterprises to have a deeper understanding of different plant spectra, living conditions, cultivation environment, etc. , which is exactly what many enterprises are troubled by at present. 4. However, at present, agricultural Lighting LED panel lamps usually only provide 2 or 3 kinds of LEDs with different peak wavelengths, which cannot provide equipment for plant production research of Multicolor spectral coupling and superposition effect. With the continuous improvement of LED plant lighting technology in China, its production cost will gradually decrease and its penetration rate will gradually increase, and the Chinese market will enter an outbreak period. In general, whether from the perspective of promoting the development of modern agriculture or realizing energy conservation and environmental protection, the application of LED in agriculture is of great significance, the status and development needs of agriculture also provide development opportunities for LED.