#blue spectrum

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The spectra of different wavelengths of LED grow lights have different effects on plant photosynthesis, and the wavelength is about 400~720nm. 400~520nm (blue) light and 610~720nm (red) have the greatest contribution to photosynthesis. Other spectra also have effects on plants, but the effects are relatively small compared to most plants, and some special plants have obvious effects.

What are the functions of the red spectrum of LED grow lights?

Under the red light of LED grow lights, the chlorophyll content in the plant is high, photosynthesis is strong, and the synthesis of carbohydrates is high, which provides sufficient material and energy for plant growth; therefore, red light promotes the formation of plant chlorophyll, promotes stem nitrogen metabolism, It also greatly promotes flowering and fruiting.

The blue light of LED grow light mainly prevents plants from growing, promotes the formation of plant dry matter, has a significant effect on the growth of leaf roots, has a strong influence on the chemical composition of plants, and can promote the synthesis and quantity of protein and fat.

How to choose the red and blue spectrum ratio of LED grow lights

The problem of LED grow light spectrum ratio is a question that buyers ask a lot during consultation, which is also a very difficult question to answer, because there are many types of plants, and they can be divided into positive plants, negative plants, and shade-tolerant according to the degree of light required. Plants can be divided into long-day plants, short-day plants, medium-day plants, and intermediate-type plants according to the light time needed. According to their functions, there are too many.

There must be a tailor-made LED grow light supplement light program for each growth period of each plant. However, the data is not perfect. And the parameters can only be used as a partial reference. Whether it is the research of various countries in the world, or the major plant breeding and planting companies or the LED grow light plant lighting service provider, the parameters in this area are still under study, and the specific application needs to introduce the local at that time Other factors are considered comprehensively, so it is necessary to answer exactly which plant is suitable for which configuration.

At present, everyone refers to the data based on the ratio of sunlight spectrum, and adjusts flexibly according to the field planting situation and crop types and functions. The ratio of red to blue light of the sun is about 6-8:1. People refer to this to conclude that flower foliage or leaf viewing For vegetable-like plants, the configuration should be less than 6-8:1, so that the blue light is a little bit more, and the blue light has a promoting effect on the growth of plant leaves. For flower viewing, choose 6-8:1 or more for supplementary light during the flowering period, so that there will be more red light, and red light has a significant effect on the flowering and fruiting of plants. For other growth stages, follow the sunlight reference ratio, and choose 6-7:1.

The same plant has different requirements for light quality and light quantity in different growth periods. The cheaper LED grow light can be used in the seedling period of the plant. LED grow light bar is a good choice, and high-power plants can also be appropriately reduced. The number of lights on (group-controlled LED grow lights are more expensive), and high-power LED grow lights will be used when the plants bloom and bear fruit, so that the crops will grow at a very fast growth rate of excellent quality.

It can be seen from the effect of red and blue light that when choosing the ratio of red to blue spectrum of LED grow lights, it is necessary to determine what plant to grow and what kind of growth form it will achieve. For example: lettuce planting, lettuce is mainly stems and leaves, so we should choose blue light that stimulates the quality and yield of stems and leaves, then the blue light spectrum of LED grow lights can increase the proportion; another example: tomato planting, our goal is to eat more Round, healthy and green high-quality tomatoes, that is, the purpose of stimulating their flowering and fruiting during the planting process, the red spectrum ratio of LED grow lights can be appropriately increased at this time.

Since the main function of red light is to promote the flowering and fruiting of plants, and the main function of blue light is to promote the growth of plant stems and leaves, then we can choose monochromatic light for some plants. Wouldn’t it be better, but the photosynthesis process is extremely complicated, with light response and darkness. Each step of the reaction has the direct and indirect participation of light, and each of these steps determines the final morphogenesis of the plant.

The red and blue spectrum LED grow light spectrum includes red light spectrum and blue light spectrum, while the full spectrum LED grow light simulates sunlight, the spectrum is close to sunlight, including red, orange, yellow, green, cyan, blue, and purple spectra, suitable for To add light to a variety of plants,

Features of full-spectrum LED grow lights:

Yaorong Technology has developed a full-spectrum LED grow light based on the wavelength range of sunlight required for plant growth and the required illuminance.

1. Full-spectrum LED grow lights have the same spectrum as sunlight, which meets the demand for spectrum at any time and at any stage.

2. With the physical optical lens, the light is evenly distributed, and the light efficiency is higher than other traditional plant lights.

Distribution of full-spectrum LED grow light source:

(Each set uses 35W, the best irradiation radius is 4-5 meters, the best installation height is 2-2.5 meters, and the interval is 4-5 meters)

(Each set uses 70W, the best irradiation radius is 5-6 meters, the best installation height is 2.5.-3 meters, and the interval is 5-6 meters)

(Each set uses 150W, the best irradiation radius is 10 meters, the best installation height is 5-7 meters, and the interval is 10-12 meters)

(Each set uses 250W, the best irradiation radius is 15-20 meters, the best installation height is 8-12 meters, and the interval is 15-20 meters)

The role of full-spectrum LED grow lights:

The full-spectrum LED grow light can bring obvious effects to the growth of plants like sunlight, and is not affected by seasonal factors and regional problems, and can fill light at any time throughout the day.

If it is only sunlight, the growth of plants will get worse with time when the season comes or northern regions, especially in greenhouses, greenhouses and other planting bases, which lack sufficient light. By using full-spectrum LED grow lights, it can not only promote Its growth can also extend the flowering period and improve the quality of plants.

For the cultivation of flowers, full-spectrum LED grow lights also play the role of landscape lighting. Because of the strong color rendering of the light source, it gives people a beautiful and pleasing feeling.

The influence of LED grow light's spectral range on plant physiology:

280~315 nm: minimal influence on morphology and physiological processes.

315~400nm: Less absorption of chlorophyll, which affects the photoperiod effect.

400~520 nm (blue): The absorption rate of chlorophyll and carotenoids is the largest.

520~610nm (green): The pigment absorption rate is not high.

610~720nm (red): The absorption rate of chlorophyll is low, which has a significant impact on photosynthesis and photoperiod effects.

720~1000nm: Low absorption rate, stimulate cell elongation, affect flowering and seed germination.

>1000nm: Converted to heat.

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Blue Spectrum By Admin