LED grow light is a kind of light that emits special light waves, which are suitable for absorption during photosynthesis of plants. LED grow lights adopt mature energy-saving lamp technology. A large number of experimental results have proved that under the condition of ensuring the temperature in the greenhouse, it can promote the photosynthesis of plants, and it is an indispensable light supplement device in off-season cultivation.
Driven by market demand, greenhouses are widely used to produce off-season flowers, fruits and vegetables. Most parts of the north are located in a temperate monsoon climate. In winter and spring, affected by the southward movement of cold air from Siberia, rain and snow sometimes form due to the convergence of cold and warm air. 1-3 days with low temperature and little light, 7-8 days or even cloudy days with little light. The disaster of insufficient sunlight is becoming more and more serious. When the light intensity is lower than its compensation point, the consumption of organic matter is greater than the accumulation, and the dry weight of plants decreases. Plant growth is also weak.
LED grow lights can solve the problem of insufficient sunshine in the rainy and foggy days of the vegetable greenhouse, so that the plant has a high flowering and fruiting rate and a good fruit shape. Installing LED grow lights in the greenhouse in winter can increase vegetable output by 12%-19%. Put flowers, fruits and vegetables on the market 7-15 days in advance, increase the brightness of flowers, and improve the sweetness and taste of fruits and vegetables.
More use of LED grow lights to provide light energy for plant growth and development is the only development direction for plant cultivation. LED grow lights will be an important technical measure for industrialized high-yield cultivation and stable production. More and more artificial light sources are applied to actual production and life to adjust the light environment of our production and life.
According to the plant photosynthesis spectrum and chlorophyll absorption spectrum, we can choose a light source product that meets the needs of this spectrum. In order to meet this spectrum demand, the light source products that can meet this demand are mainly LED plant lights, the red color is between 600-700nm. The ratio of the blue spectrum and the red spectrum can be adjusted by adjusting the formula of the phosphor.
The growth process of plants is completed by light regulation. The growth process involves photosynthesis, photoperiod regulation and photoecological formation. The absorption of light by plants is not in the whole waveband, but selective. Light regulates the entire growth and development of plants in order to better adapt to the external environment. This kind of changes in cell differentiation, structure and function that rely on light control will eventually be inherited to the establishment of tissues and organs and become a process of light morphogenesis, that is, light control development. Light plays a signal role in photomorphogenesis, which is different from the energy role in photosynthesis.
The characteristics of LED grow lights
1. Specialization
The spectrum and light quantity of the LED grow light can be adjusted and timed, and the waterproof performance is high, which promotes the development of planting collars. The spectrum emitted by the LED grow light can meet the spectrum required by the plant at any time, so that the growth state of the plant is not affected, and the growth cycle is faster. , Reflects that the LED grow light is more professional.
2. High efficiency
The improvement of luminous efficiency and energy efficiency is the key to greatly reducing the operating cost of plant lighting, and it is the inevitable trend of refined agriculture in the future. In terms of improving yield, according to the developmental characteristics of plants, it can be cultivated in stages and regions combined with light formula to improve the production efficiency and yield of each stage; in terms of improving quality, LED grow light spectrum regulation and other means can be used to improve nutrition The content of ingredients and other health-care functional ingredients.
3. Intelligent
LED grow lights have a strong demand for real-time control of light quality and light quantity. With the improvement of intelligent control technology and the application of the Internet of Things, a variety of monochromatic spectra and intelligent control systems can realize time control, light control, and according to the growth of plants. The light quality and light quantity output adjusted in a timely manner will inevitably become the main trend of the future development of plant lighting technology.
The spectrum of LED grow lights can cover the wavelength range of 200-950 nm, and there are dozens of monochromatic lights. It can meet the various spectra required for plant growth, when and where to supplement light for plants, regardless of climate, region and season.
