Views: 664 Author: Site Editor Publish Time: 2021-12-30 Origin: Site
The light sources suitable for Led grow lights are: high pressure sodium lamp, metal halide lamp, ceramic metal halide lamp, microwave sulfur lamp, plasma lamp, fluorescent lamp, electrodeless lamp, three primary color rare earth lighting lamp, led plant lamp, etc. The most commonly used are sodium lamps, metal halide lamps and led plant lamps for plant lighting. Others are relatively small or very expensive.
High pressure sodium lamps can be divided into ordinary sodium lamps, high luminous efficiency sodium lamps and sodium lamps for plant lighting. The commonly used ones are 250W, 400W, 600W and 1000W. The current trend is that the higher the power, the better, because it is very simple. One set of 1000W system is cheaper than two sets of 400W systems with large coverage and good effect.
Ordinary sodium lamps have low price and low luminous flux. As the name suggests, high luminous efficiency sodium lamps have higher luminous flux, but these are not real sodium lamps for plant lighting, but only used as street lamps.
Sodium lamps for plant lighting must have correct spectrum and high lumen output; Although the high luminous efficiency sodium lamp has high lumen output, the content of red and blue light in the spectrum is much lower than that of plant sodium lamp, and the useless green light is 7-9 times higher than that of plant sodium lamp, which can only waste energy under the effect. That's why a customer asked why the growth effect was not obvious. You used the wrong light.
High luminous efficiency sodium lamp and plant sodium lamp can only be judged by spectral analysis. At present, there is no method to judge with the naked eye. This is why many factories can unscrupulously deceive the majority of growers and bring losses to consumers.
Metal halide lamps are rich in blue light, and even plant sodium lamps with enhanced spectrum contain much less blue light than metal halide lamps. Sodium lamp and metal halide lamp together can achieve a very perfect effect, but considering the cost, sodium lamp is mainly used in greenhouse. When buying metal halide lamps, beware of bad merchants. The inside of the shell of metal halide lamps is actually mercury lamps, which is very cheap.
Led plant lamp is a high-tech new product rising with LED white lighting in recent 5 years. Because of its accurate light quality and artificial combination adjustment, high photosynthetic radiation per unit power consumption, good light supplement effect of plants, low operation cost (super power saving), it is deeply favored by agricultural research institutes and intelligent plant factories all over the world. However, since 2012, some private handicraft workshops have joined the manufacturing camp of lamps. These people do not understand agricultural technology, nor do they have product experimental conditions. They do not consider safety regulations. They just purchase components and assemble them at will. The finished products are super cheap. This poor quality and ineffective so-called "led plant lamp" is disturbing the originally difficult market environment, which is also the current situation faced by the white LED market. Therefore, when choosing led plant lamps, you should also polish your eyes. It is best to choose products built before 2012 with quality assurance, brand and reasonable price. You can't be greedy for cheap and suffer huge economic losses and safety accidents.