The development of led plant grow lamp in the past five years

Plant lamp is a new high-tech product with white LED lighting in recent five years.
In recent years, many domestic scientific research institutes have started or completed the experiment on the effect of different LED light quality on plants. The light quality of LED plant lamp is determined by chip, but the quality of domestic chip used in current plant lamp is not up to standard, so we can only choose the LED lamp beads packaged by imported chip to produce LED plant lamp, which leads to high cost of lamp production. However, due to its accurate light quality and artificial combination adjustment, high photosynthetic radiation per unit power consumption, good plant light compensation effect and low operating cost (super power saving), it is favored by agricultural research institutes and intelligent plant factories all over the world. However, some private manual workshops have joined the manufacturing camp of lamps and lanterns.

These people do not understand agricultural technology, do not have product experimental conditions, do not consider safety regulations, just purchase components and assemble them at will, and the price of finished products is super cheap. The so-called “led plant lamp” with poor quality and no effect is disturbing the original difficult market environment, which is also the current situation of white LED market. Therefore, when choosing led plant lamps, we should also polish our eyes. It is better to choose products built before 2012 with quality assurance, brand and reasonable price. We should not be greedy for cheap and suffer huge economic losses and safety accidents.

Plants rely on the energy of light for photosynthesis and grow, bloom and bear fruit. However, due to the ever-changing climate change and light variation in nature, the plants can not fully absorb the photosynthetic nutrition they need in different growth periods, which brings disadvantages to the growth, especially in the seedling stage. Therefore, scientific and reasonable artificial spectrum has created good absorption and reflection conditions for plant growth. The energy values in the blue and red light regions are very close to the efficiency curve of plant photosynthesis (especially for green plants), which is the best light source for plant growth.
Different plants have different requirements for spectrum. For example, lettuce is red / Blue 4:1, strawberry 5:1, and universal 8:1. Some plants need to add infrared and ultraviolet rays. However, some factories have little knowledge and put all the spectra together. The name “full spectrum” is suitable for any plant. As a result, because it contains ultraviolet rays, it can kill orchids. Fortunately, it is not hundreds of thousands of them. White light contains all the spectrum, so someone put a whole white LED. It’s full spectrum. Philips did this stupid thing. But I did an experiment, the same plant, using two 200W white light, while using a 90W UFO (red and blue 1:1) and 90W square (red and blue 8:1). After a week, plants under white light obviously grow slower than those with red and blue lights. Don’t be superstitious about white light. At most, add a few white LEDs in the red and blue light to improve the use, rather than as the main lamp. The output lumen of LED is not high. Some customers say that Philips is useless, because the maximum T-tube lamps of Philips are only 20W, and a frosted lampshade is added, and some lumens are lost. How many micromoles can be left when it is hung high on the plant? It’s strange that it works. Led plant lamps with less than 50 watts are suitable for use close to plants, which are more suitable for plant tissue culture (layered planting), family cultivation of flowers and vegetables, small space soilless cultivation and other fields, while the LED plant lamps with more than 50 watts are suitable for greenhouse use, and the lamp distance from the main crown area of crops should be controlled within 2.5 meters.
A large number of applications of LED in plant protected cultivation environment show that led can solve these problems, especially suitable for artificial light control plant facility cultivation environment. Led plant lamps adopt different measures, so as to avoid the existence of different degrees of problems, such as the lack of analysis of specific spectral components, resulting in impure light quality, inconsistent light intensity, close to or even lower than the light compensation point of plants, and low energy efficiency of illumination source.