Plants rely on the energy of light for photosynthesis to grow, bloom, and the result. However, due to the ever-changing nature of the ever-changing climate change and light variations, plants can not fully absorb the photosynthetic nutrients they need during different growth periods in different growth periods, which is unfavorable for growth, especially in the seedling raising stage. In this regard, scientific and rational artificial spectrum of plant growth has created a good absorption and reflection conditions. The energy values of the blue and red regions are very close to the efficiency curves of photosynthesis of plants (more so for green plants) and are the best sources of plant growth.
In the traditional agricultural production, ordinary electric light sources are used to supplement lighting and apply different covering materials and other agricultural technical measures. For example, monochromatic fluorescent lamps or colored plastic films are used to change the light environment to control the growth and development of plants in the facility cultivation environment. LED plant growth lamps use different measures to avoid the existence of varying degrees of problems, such as the lack of analysis of specific spectral components resulting in impure processing of light quality, light intensity inconsistencies, close to or below the plant's light compensation point , Low energy efficiency of light irradiation. The large number of LED applications in plant cultivation environment research results show that LED can solve these problems, especially suitable for artificial light control plant cultivation environment.
The LED in plant cultivation also shows the following characteristics: rich wavelength type, coinciding with the spectral range of plant photosynthesis and light morphogenesis; narrow half-width spectrum wave width, pure monochromatic light and composite spectrum can be obtained as required; Which not only can regulate the flowering and fruiting of crops, but also can control plant height and vegetative components of plants; less system fever and small occupation space, and can be used for multi-layer cultivation stereo combination system to achieve low heat load and production Space miniaturization; In addition, its extremely strong durability also reduces operating costs. Due to these salient features, LEDs are well suited for plant cultivation in controlled facility environments such as plant tissue culture, facility horticulture and industrial nursery and aerospace biosecurity systems. By 2013, the area of horticultural facilities in our country has been developing rapidly. Plant lighting technology has been paid attention to in light environment control of plants.