The plant fill light is designed according to the principle that plants need photosynthesis. It is great for plants, but it is harmful to the human body, because the plant light is mainly red and blue light, and the blue light band is between 400-480nm. Direct sunlight will cause certain damage to the eyes. How to use the plant light safely? What are the main hazards of plant lights to the human body?
How to use plant lights safely
1. Pay attention to adjusting the distance and position of the fill light
If the fill light is just a simple fill light, it can be a little closer to the plant. If the fill light has a heating effect, it should be farther away from the plant to prevent damage to the plant. It is generally recommended that the distance from the top of the plant to the LED grow light be controlled between 12 inches and 24 inches. This distance not only allows the plant to receive sufficient light, but also the LED grow light can illuminate a wider area. At the same time, according to the speed of plant growth, the height of the LED plant light should be properly adjusted to control the LED plant growth light in the most reasonable fill light position.
2. The use of plant lights
The plant light should not illuminate the plant for 24 hours. It can be used to supplement the light in the daytime, but it is best not to open it at night, because the plant also has the characteristics of day and night, and it should be used according to the characteristics of the plant.
3. The fill light intensity of the plant lamp
Just after the crops are transplanted, try to avoid the use of fill light, and you should wait for the plant to grow normally after slowing the seedlings before using the fill light. To supplement light for plants, it should be flexibly set according to the types of plants and different growth stages of crops. The degree of supplementary light required by plants in each growth stage is different. The light required in the germination and seedling period is not very strong. The distance of the plant lights can be increased, the number of LED plant lights can be reduced, and the waste of electricity can be avoided; when the plants bloom and bear fruit The required light will increase. At this time, the plants are supplemented with LED plant growth lights according to the best supplementary light scheme.
What are the main hazards of plant lights to the human body?
The harm of light quality is ultraviolet radiation. Short ultraviolet exposure may lead to skin erythema, etc., and long time will lead to skin cancer, and the eyes will also lead to conjunctivitis, keratitis, cataract, etc. The midday sun on a sunny day contains more UV rays, so the midday sun shouldn’t be shining too much. Lamps containing ultraviolet rays should not be irradiated for a long time.
The harm of light intensity, too strong light will damage the eyes, the noon sun can not look directly, the light will cause eye dizziness, serious eye burns. The high-intensity laser ultraviolet rays are stronger than the noon sun, and can’t be seen directly. Looking directly at the laser can cause burns to the macula, which can lead to disease in a lesser degree, resulting in irreversible vision loss. This physiological damage cannot be repaired.
The hazards of thermal light sources mainly refer to the fact that some different light sources of enterprises can emit light by studying the conversion of thermal energy into light energy. The light is accompanied by a lot of heat, and the problem of excessive heat can easily burn the human body. Such traditional light sources mainly include incandescent lamps, tungsten halogen lamps, etc., collectively referred to as thermal light sources.
