Many domestic research institutes have only started or completed experiments on "the effect of different LED light qualities on plants" in recent years. The quality of LED plant light is determined by the chip, and the quality of the domestic chip used in the current plant light is not good enough. Therefore, we can only choose imported chip-encapsulated LED lamp beads to produce LED plant lights, which leads to high production costs for lamps. However, because of its accurate light quality and artificial combination adjustment, high photosynthetic radiation per unit power consumption, good lighting effect of plants, low operating cost (super power saving) and many other advantages, it is deeply loved by agricultural research institutes and intelligent institutions all over the world. Favored by chemical plants and factories. However, some private workshops have joined the lighting manufacturing camp. These people do not understand agricultural technology, and do not have product experiment conditions. They do not consider safety issues. They just purchase components and assemble them at will, and the prices of finished products are super cheap. This inferior and ineffective so-called "LED plant light" is disrupting the originally difficult market environment. This problem is also the current situation facing the white light LED market. Therefore, when choosing LED plant lights, you must keep your eyes open. It is best to choose to build a factory before 2012. The products have quality assurance, brand names, and reasonably priced products. You should not be greedy for cheap and suffer huge economic losses and safety accidents.
Plants rely on the energy of light for photosynthesis to grow, flower, and bear fruit. However, due to the ever-changing climatic changes and light changes in nature, plants cannot fully absorb the photosynthetic nutrients they need during different growth periods, which brings disadvantages to growth, especially in the seedling stage. In this regard, scientific and reasonable artificial spectrum creates good absorption and reflection conditions for plant growth. The energy values of the blue light zone and the red light zone are very close to the efficiency curve of plant photosynthesis (the efficiency is even more significant for green plants), which is the best light source for plant growth.
Different plants have different requirements for the spectrum. For example, lettuce is red/blue 4:1, strawberry 5:1, general-purpose 8:1, some need to increase infrared and ultraviolet rays, but some factories do not understand all the spectra. At the same time, it is said that the full spectrum is suitable for any plant, but because it contains ultraviolet rays, it kills the orchids. Fortunately, it is not the kind of hundreds of thousands. White light contains all the spectra, so someone made a white LED, which is full spectrum. Philips also did this stupid thing. And I did an experiment, the same plant, with two 200w white lights on one side, a 90w UFO (red and blue 1:1) and 90w square (red and blue 8:1) on the same plant, the plant under white light a week later Obviously it grows slower than using red and blue lights. Don't be superstitious about white light. At most, add a few white LEDs to the red and blue lights to improve the use, not as the main light. The output lumens of the LED itself is not high. Some customers say that Philips’s is useless, because these Philips T-tube lamps have a maximum of 20w, and a frosted lampshade is added, which loses part of the lumens. How many micromoles can be left when hanging high and shooting on plants? It's only strange if it works. LED plant lights below 50 watts are suitable for use close to plants, and are more suitable for plant tissue culture (layered planting), family gardening and vegetable cultivation, and soilless cultivation in small spaces, while LED plant lights above 50 watts are suitable for use in greenhouses , The light distance from the main crop canopy area should be controlled within 2.5 meters.
In traditional agricultural production, ordinary electric light sources are generally used to supplement the light and the application of different covering materials and other agricultural technical measures, such as the use of monochromatic fluorescent lamps or colored plastic films, and changing the light environment to regulate the growth and development of plants in the facility cultivation environment. A large number of research results on the application of LEDs in plant facility cultivation environments show that LEDs can solve these problems and are particularly suitable for use in artificial light-controlled plant facility cultivation environments. LED plant lights adopt different measures to avoid problems of different degrees, such as lack of analysis of specific spectral components, resulting in impure light quality processing, inconsistent light intensity, close to or even lower than the light compensation point of plants, The energy efficiency of the illumination light source is low.
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