Looking forward to the 21st century, it is known as the "century of light." Plant photosynthesis is the foundation of all life on earth. Artificial light supplementation in the absence of sun light and artificial lighting in a closed environment require new light sources with high efficacy and low energy consumption. LEDs are attracting the attention of the world with their unique advantages of energy saving and high efficiency. Especially in the context of global energy shortage, the popularization of LED is highly valued by countries all over the world. It is expected that LED will be in agriculture and biology in the near future. The industry has achieved unprecedented development.
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LED application prospects in agriculture and bio-industry
一: LED will play an important role in the field of artificial light supplementation
Artificial fill light is an important means of controllable environmental agriculture, especially in seasons with low light and high latitudes. At present, the commonly used light sources are mainly high-pressure sodium lamps and metal halide lamps, which have large energy consumption and high operating costs, which seriously affect the popularity of artificial light-filling technology. In recent years, with the development of high-brightness, high-power LED products, red, blue and far-red LEDs and their combined lamps have been continuously introduced, achieving energy savings of 50% to 80%. It is expected that in the near future, with the continuous improvement of the performance of semiconductor light sources, the price will be further reduced, and the artificial light-filling technology with LED as the core will play an important role in the controllable environmental agriculture field.
二: LED will play an active role in plant factories and life support systems
The remarkable feature of LED is that it can emit monochromatic light of different wavelengths, and can be combined according to the spectral requirements of plant photosynthesis and morphological formation to form an energy-saving and efficient artificial light source. These significant advantages of LED will definitely play an active role in many fields of agriculture and bio-industry. In the field of plant tissue culture, there will be a group-specific LED-specific luminaire that replaces traditional fluorescent lamps, which greatly reduces the energy consumption of the tissue culture system; multiple monochromatic light (such as red-blue light) LEDs will appear in fully controlled plant factories. The combined artificial light source multiplies the spacing and space utilization of the crop cultivation layer, thereby promoting the popularization and application of the plant factory; in the spacecraft, ocean-going vessels and other places such as the planet, LEDs will be used as artificial light sources. The plant production system meets the food needs of people in special circumstances.
三: LED and new energy combination will bring revolution and breakthrough in plant production system
With the development of solar photovoltaic technology and the application of new energy sources such as wind energy, tidal energy and bioenergy, the combination of energy-saving light source LED and these new energy sources will be an inevitable trend. By then, controlled environmental agriculture will completely rid itself of fossil energy and achieve efficient plant production under zero-emission pollutants. The combination of solar photovoltaic technology and other new energy sources and LEDs will also greatly improve the energy efficiency of industrialized agriculture, skyscraper agriculture, space agriculture and planetary agriculture, and even bring about major revolutions and breakthroughs in plant production systems. In summary, LED applications in the agricultural and biological fields have shown strong vitality. However, in order to realize the true popularity of LED light sources, there are still many topics to explore. The mechanism of action of monochromatic LEDs on different plants, the appropriate LED combination ratio parameters and the development of special lamps, and how to further improve the light efficiency and reduce costs are all key issues to be solved urgently.
With the start of semiconductor light source engineering, the continuous maturity of LED technology, the gradual reduction of manufacturing costs and the country's further emphasis on energy-saving projects, it is believed that LED will be widely used in many fields of agriculture and biology in the near future.
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