Features and advantages of LED plant lights and full-spectrum plant growth lights
Features of LED plant light:
1. Blue light helps plant photosynthesis to promote green leaf growth, protein synthesis, and fruit formation; red light can promote plant rhizome growth, help flowering and fruiting and prolong flowering, and increase yield!
2. Blue (470nm) and red (630nm) LEDs can just provide the light needed by plants, so the ideal choice is to use a combination of these two colors. In terms of visual effects, the red and blue plant lights are pink.
3. Different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength of about 400-700nm. 400-500nm (blue) light and 610-720nm (red) contribute the most to photosynthesis.
4. The power of LED plant growth lights is low, but the efficiency is extremely high. Because other lights emit full spectrum, that is, there are 7 colors, but the plants need only red light and blue light, so most of the light energy of traditional lights is Wasted, so the efficiency is extremely low. The LED plant growth lamp can emit specific red and blue light that plants need, so the efficiency is extremely high. This is why the power of a few watts of the LED plant growth lamp is better than the lamp with a power of tens of watts or even hundreds of watts. Another reason is the lack of blue light in the spectrum of traditional sodium lamps, and the lack of red light in the spectrum of mercury lamps and energy-saving lamps. Therefore, the supplementary light effect of traditional lamps is much worse than that of LED lamps, and it saves more than 90% of energy compared with traditional lamps. The cost is greatly reduced.
5. When plant lights are used to supplement light for plants, the height from the leaves is generally about 0.5-1 meters, and continuous exposure for 12-16 hours a day can completely replace the sun.
6. The ratio of red and blue LEDs of LED plant lights is generally between 4:1--9:1, usually 6-9:1.
7.The effect is very significant, and the growth rate is almost 3 times faster than that of natural plants.
8. LED light source is also called semiconductor light source. This kind of light source has a relatively narrow wavelength and can emit light of a specific wavelength, so the color of the light can be controlled. Using it to irradiate plants alone can improve plant varieties.
9. Solve the problem of lack of sunlight in the greenhouse in winter, promote the chlorophyll, anthocyanin and carotene needed in the photosynthesis of plants, so that the fruits and vegetables are harvested 20% earlier, increasing the yield by 3 to 50%, and improving the sweetness of the fruits and vegetables. And reduce pests and diseases.
The effect of LED light quality on the flowering of crops. It has been found that there are 5 different gene-coded phytochromes (PhyA～PhyE) in Arabidopsis. PhyA and PhyB are not necessary for flowering induction, but they are involved in the regulation of flowering time. PhyA is overexpressed in plants to bloom earlier, and PhyB delays the flowering of plants. PhyA participates in the "extremely low radiation response" and the far red light "high radiation response knife, while PhyB participates in the "low radiation response" and the red light "high radiation response". Therefore, the far red and blue LEDs promote flowering, while the red light Light plays an inhibitory role. In addition, some people have studied the effect of light quality on flower bud differentiation from the aspects of nutrient supply and other aspects. The higher amino acid content and energy material strength under LED blue light The flower bud differentiation and flower development of chrysanthemum provide cell structure components and energy Under this treatment, the number of buds and the number of flowers per plant of chrysanthemum were both higher than those of the control.
led plant light
The effect of LED light on the formation of photosynthetic pigments in leaves. Photosynthetic pigments can absorb, transmit and convert light energy, and are the material basis for photosynthesis of plants. Its content and composition directly affect the photosynthetic rate of leaves. LED blue light can promote the formation of chlorophyll in hyacinth callus, while red light reduces its total chlorophyll content. Compared with pure red light, when red light is mixed with blue light, yellow light and orange light, respectively, the promotion of chlorophyll synthesis in sorghum, cucumber and sorghum leaves is weaker; when blue light is mixed with other light, these three kinds of light The promotion of plant chlorophyll synthesis is relatively large. It is also believed that this effect of mixed light is due to the fact that when pure red light or pure blue light is mixed with light of other wavelengths, the content of phytochrome in the activated state changes, and the activation of cryptochrome is also different, which causes a variety of different Biological effects. Chlorophyll a is an important photosynthetic pigment, it can transfer the absorbed light energy to the photosynthetic chemical reaction center. Blue light can increase the chlorophyll a content of a variety of algae plants, so plants cultivated with LED blue light generally have higher chlorophyll a/b values, while plants cultivated with red light have lower chlorophyll a/b. Carotenoids are auxiliary pigments of chloroplast photosynthetic antennas, which can receive light energy from the moderator chlorophyll. Studies have shown that LED light quality can affect the carotenoid content of coffee leaves, especially the synthesis of different types of carotenoids. Compared with white light, yellow light, red light, and blue light all reduce the carotenoid content of lettuce. Red light can reduce the carotenoid content of hyacinth callus.
Comparison of several light spectrums
Advantages of LED plant lights:
1.Compared with other general lighting equipment, the LED plant light has a gentler light line and will not scorch the seedling plants.
2. An environment with red and blue wavelengths is required for plant growth.
3. Blue light can promote plants to grow taller, and red light can make plants bloom and bear fruit.
4. Compared with other plant lighting lamps, it can save 10%~20% of the electricity bill.
5. No standard power socket connectors for drivers or cooling fans are required.
The role of full-spectrum plant growth light:
The full-spectrum plant growth lamp is an artificial light source with full-spectrum developed in accordance with the law of plant growth and the principle of simulating the ratio of the solar spectrum. The radiation range is wide, reaching more than 100LM per watt, which truly meets the requirements of green lighting. For agricultural greenhouses, as supplementary light, light can be enhanced at any time of the day, so as to always help plants to photosynthesize. Especially in the winter months, the effective lighting time can be extended. Whether it is at dusk or at night, it can effectively extend and scientifically control the light required by plants, without being affected by any environmental changes.
In a greenhouse or plant laboratory, it can completely replace natural light to promote plant growth.
After application tests, the wavelength of the full-spectrum plant light of Wellcome is very suitable for the growth, flowering and fruiting of plants. Generally, indoor plants and flowers will grow worse and worse with time. The main reason is the lack of sufficient light irradiation. Spectral irradiation required by plants can not only promote their growth, but also prolong the flowering period and improve the quality of flowers and trees.
For the cultivation of plants and flowers in the office halls of large enterprises, supplementing light is a big problem. The use of Philippine full-spectrum low-power supplementary light can completely solve it. It also plays a role in landscape lighting due to the color rendering of the light source. Strong, the flowers and trees are brightly colored under the full-spectrum light, giving people a beautiful and pleasing feeling.
Features of full-spectrum plant growth light:
The full-spectrum plant growth lamp is developed according to the wavelength range of sunlight required for plant growth and the required illuminance. The reasonable use of this kind of light can not only breed and grow under conditions that are not suitable for plant growth, but also speed up crops. Breeding and shorten the growth cycle of crops, avoiding pests and diseases and deformed fruits.
1. The full-spectrum plant light is an artificial light source with a full-spectrum, and the resulting beam is most suitable for plant growth (chlorophyll, anthocyanin, carotene)
2. With the floodlight effect of special floodlights, the illuminating light effect is evenly distributed, and the light effect is twice that of other sodium lamps of the same wattage, and 7 times that of incandescent lamps.
Light source distribution for full-spectrum plant growth:
(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 principle of full-spectrum plant growth light:
Light environment is one of the important physical environmental factors that are indispensable for plant growth and development. Controlling plant morphology through light quality regulation is an important technology in the field of facility cultivation. Full spectrum plant light:
Contains a wavelength of 400-420nm to help form anthocyanins and resist the elongation of branches and leaves. The wavelength is 450-460nm, which can thicken stems and leaves, accelerate plant development, and regulate stomata opening.
The wavelength of 550nm promotes the growth of oxygen and helps tissues to better accumulate nutrients. With a wavelength of 580nm, it can promote the growth of roots and early germination.
The wavelength of 650～660nm promotes the overall growth of the plant, especially in the flowering and fruiting period, increasing the growth speed (20 days earlier flowering, 30 days earlier harvest), also increases the number of fruits by 25% to 35%, and reduces deformed fruits The rate of occurrence. The absorption rate of 720~1000nm is low, which stimulates cell elongation and affects flowering and seed germination.
In addition, the visible light of this product is a kind of electromagnetic wave, and it also contains a small amount of ultraviolet light, which can effectively prevent pests and diseases. The effect of LED light quality on the differentiation of crop buds, and the effects of light of different wavelengths on crops inducing bud formation are different. The formation of small bulbs and protocorms of lily and tiger head orchids as underground buds does not depend on light quality conditions, while the adventitious buds of African violets and variegated crabapples as ground buds and above-ground buds, LED red light has a promoting effect, blue light Tobacco has an inhibitory effect against darkness; blue light is beneficial to the formation of adventitious buds in tobacco, while red light and darkness have an inhibitory effect. Short-wave light can promote the growth of tobacco buds at a lower intensity, while long-wave light needs to be at a higher light intensity to promote buds.
