LED plant growth lighting is widely used

In recent years, with the continuous development of agricultural production technology and people’s increasing demand for improving the planting yield and shortening the planting cycle, artificial light sources are increasingly used in the field of plant growth, such as vegetables, fruits and flowers. Growth lighting, nursery, etc.

LED is a new type of lighting source that has received extensive attention and rapid development in recent years. As a new type of lighting source, LED has many different characteristics from other electric light sources, which also makes it the first choice for energy saving and environmental protection light sources. In the past 10 years, the area of ​​horticultural facilities in China has developed rapidly. The light environment control technology for plant growth has attracted attention. The horticultural light irradiation technology is mainly applied in two aspects: as a supplemental irradiation for photosynthesis of plants when the amount of sunshine is small or when the sunshine time is short; as an induced irradiation of the plant photoperiod and photomorphogenesis. LED has significant advantages in both aspects.

LED can also be applied to the aerospace eco-surveillance system. The establishment of a controlled ecological life-support system is the fundamental way to solve the long-term manned space life assurance issue. One of its key technologies is light. Compared with other sources such as cool white fluorescent lamps, high-pressure sodium lamps, and metal halide lamps, LEDs can effectively convert light energy into photosynthetically active radiation; in addition, it has long life, small size, light weight, and solid-state characteristics. Therefore, LEDs have received much attention in recent years for ground and space plant cultivation.

In traditional agricultural production, agricultural technology measures such as using ordinary electric light sources to supplement light and white light sources covering colored plastic films are generally used to change the light environment to regulate the growth and development of plants in the cultivation environment. However, these measures have different degrees of problems, such as the lack of analysis of specific spectral components resulting in impure light quality, inconsistent light intensity, close to or even lower than the light compensation points of plants, and low energy efficiency of irradiation light sources. LED can solve these problems, especially suitable for artificial light control plant cultivation environment.

At present, the main problems existing in the application of LED light sources in the field of plant growth are high cost and poor light penetration ability. Agricultural lighting products also have problems such as disordered products, non-standard production design, lack of unified product standards and quality management. Taking the plant lighting fixtures that are currently the largest in the market, as an example, LED lamp bead configurations based on red and blue light have been selected according to the needs of plants. However, there is a lack of scientifically uniform specifications for light quality adjustment and light intensity design. The lack of special high temperature, high humidity environment for plant lighting waterproof, electrical and corrosion-resistant design, resulting in some plant growth lamp products, there are hidden safety problems, and the service life is not long.

LED in the field of plant growth lighting provides a new opportunity for the development of the LED industry, LED lighting in the field of lighting in the rise today, how to ensure the healthy development of the entire industry is worth LED companies, government departments and other relevant parties to think together