If the Common LED Lamp Can Be Used to Lelp Plants Grow Like LED Grow Light?
2021-05-07
LED Grow Light uses the light-emitting diode (LED) as the light source to extract the sunlight spectrum needed to imitate the growth of plants and uses light instead of sunlight to create the growth and development of plants, which helps to shorten the growth cycle of plants. The light source is mainly composed of red and blue light sources. The most sensitive light band of plants is used. The red light wavelength is 630nm and 640-660nm, and the blue light wavelength is 450-460nm and 460-470nm. According to the research, the light source in this band can make the plant produce the best photosynthesis, and make the plant get the best growth state. The user groups of Led Grow Lights are mainly individual users, scientific research institutes, greenhouses, and three-dimensional forms. The users who like to plant use fill lights to fill the light of plants at home; Scientific research institutes are mainly used for experiments, greenhouses and three-dimensional farms are mainly used to shorten the growth cycle of crops, control flowering, and cultivate economic crops. With the legalization of marijuana in some areas of Europe and the United States, more and more users began to use LED Grow Lights to grow cannabis. With the help of the Led Grow Light, the yield and quality of marijuana have been significantly improved. As it becomes more and more popular, some people ask 'If the common LED lamp can be used to help plants grow like led grow light?' Each common LED lamp has its own unique spectrum, different LED lamps also have different spectra. It depends on how lucky you are if the LED lamp can cover one part that plant grows need, because the color temperature, spectrum, and illuminance are uncertain. If the LED lamp you buy can cover the spectrum that plant grows need, you would draw the lottery(I'm sure you will win a million). The first one is brightness, according to the different types of plants, for example, shade tolerant plants and light-loving plants need different intensities; The second is the spectrum, the absorption of different wavelengths of light by plants is different, and the influence of different wavelengths of light on plants is also different. In short, the blue light near 450 nm has an effect on the synthesis of protein and organic acid, budding, and photosynthesis. Red light near 660 nm has an effect on carbohydrate formation, such as the flowering of flowering plants. The sensitivity of plant to spectrum is different from that of the human eye. The most sensitive spectrum of human eye is 555nm, which is between yellow and green. The sensitivity to blue light and the red light was poor. Plants, on the other hand, are most sensitive to red light and less sensitive to green light, but the difference in sensitivity is not as great as that of human eyes. The most sensitive region of the plant to spectrum is 400-700nm. This region of the spectrum is usually called the effective energy region of photosynthesis. About 45% of the energy of sunlight lies in this part of the spectrum. Therefore, if the artificial light source is used to supplement the amount of light, the spectral distribution of the light source should also be close to this range. The photon energy emitted by the light source varies with wavelength. For example, the energy of 400 nm (blue light) is 1.75 times that of 700 nm (red light). But for photosynthesis, the effect of the two wavelengths is the same. The excess energy in the blue spectrum that cannot be used for photosynthesis is converted into heat. In other words, the photosynthesis rate of plants is determined by the number of photons that can be absorbed by plants in 400-700nm, but it is not related to the number of photons emitted by each spectrum. But it is generally believed that the color of light affects the rate of photosynthesis. The sensitivity of plants to all spectra is different. This is due to the special absorption of pigments in leaves. Among them, chlorophyll is the most well-known. But chlorophyll is not the only pigment useful for photosynthesis. Other pigments are also involved in photosynthesis, so the absorption spectrum of chlorophyll cannot be considered for photosynthesis efficiency. Light energy is absorbed by chlorophyll and carotene in leaves. Energy is transformed from glucose and oxygen by two photosynthetic systems to fix water and carbon dioxide. This process uses all the visible light spectrum, so the effects of different color light sources on photosynthesis are almost the same. Some researchers believe that the red part of the orange has the greatest photosynthetic capacity. But this does not mean that plants should be cultivated in this monochromatic light source. For the development of plant morphology and leaf color, plants should receive a variety of balanced light sources. Blue light source (400-500nm) is very important for plant differentiation and stomatal regulation. If the blue light is insufficient, the proportion of far-red light is too much, the stem will overgrow, and it is easy to cause leaf yellowing. The ratio of red spectrum (655 ~ 665nm) energy to far-red spectrum (725 ~ 735nm) energy is between 1.0 and 1.2, and the development of plants will be positive. But the sensitivity of each plant to these spectral ratios is also different. Overall, plant growth, from photosynthesis to nutrient production, requires different wavelengths of spectral irradiation at each stage, that is, the full spectrum of sunlight. The common LED lamp can not meet the needs of plant growth.
