LEDs are attention in recent years and get fast development of new lighting source, as a kind of new lighting, LED light source has many different from other electric light source the characteristics of this has made it a light source of choice for saving energy and environmental protection. In the past 10 years, our country horticultural facilities the rapid development and the area of the growth of plant light environment control technology has to pay attention. Horticultural facilities light irradiation technology is mainly used in two aspects: in the sunshine quantity is little or sunshine time short, as plant photosynthesis added illuminate; As plant light cycle, light form the induced illuminate built. The LED on both has significant advantage.
 

In recent years, with the development of agricultural production technology, and people to improve production plants and shorten the cycle of plants growing strong demand, artificial light source is widely applied in plant growth areas, such as vegetables, fruits, flowers, the growth of the nursery, etc lighting.
 

In the traditional agricultural production, general use normal electric light source the light supplement and dialogue covered plastic film and color light source agricultural technical measures to control the environment, change the light facility culture environment to plant growth. But these measures have different degree of problems, such as lack of specific spectral composition analysis lead to light quality processing is not pure, light strong not consistent, close to even lower than the light of the plants or compensation point light source of energy efficiency, low radiation. To solve these problems, LED is especially suitable for artificial light control of plant facilities cultivation environment.