What factors are the main concerns of plant growth lights?

Grow lights are lamps that use the principle of plant photosynthesis to supplement light for plants. It can be used to extend plant light, as a supplement in rainy weather, in conditions lacking natural light, or as a complete replacement for natural light in greenhouses. Common plant lights include incandescent lamps, fluorescent lamps, HID lamps, and LED lamps.

The selection and installation of plant lights requires certain expertise. First of all, plants need a certain light intensity and reach the light compensation point to grow normally. If the intensity does not reach the light compensation point, it will not work for plant growth, which is why some people say that plant lights are useless. When the light reaches the light saturation point, the accumulation of photosynthesis substances will no longer increase, and the phenomenon of photoinhibition will even occur when the light saturation point is exceeded. Generally, it is difficult for plant lights to reach the light saturation point. If the intensity exceeds the compensation point, it will inevitably cause waste, even inhibit growth, burn leaves, and play a negative role. The light compensation point and light saturation point of various plants are different, so it is necessary to choose a lamp with an appropriate light intensity according to the type of plant.

It is worth noting that the unit of plant light intensity is PPDF, which is the effective light intensity per unit area, and cannot be directly interchanged with the normal light unit lux. Because the light contains bands that are useless for photosynthesis. The effective light intensity of the plant light is not only related to the light intensity and spectral range of the plant light, but also to the hanging height and light area. Be sure to consult the manufacturer or reference manual.

Another important parameter about plant lights is the spectral range. In general, the red and blue bands are the most effective for plant photosynthesis. The blue band is conducive to the growth of plant stems and leaves, and the red band is conducive to the flowering and fruiting of plants.

This is the general effect of the wavelength band on the growth of plants. It is necessary to choose a plant lamp with a suitable spectral ratio for different plant species. It is worth noting that because the human eye cannot directly perceive the spectral ratio, there are many fakes on the market. Fortunately, the regular manufacturers to buy.

In addition, the illumination uniformity of the plant light is also very important. Another problem is the heating problem of plant lamps, such as incandescent lamps and high-pressure sodium lamps. There is also a layer of reflective material, which is conducive to improving the utilization rate of light by plants, and the coloring of succulent leaves will be more uniform. There are also power, luminous efficiency, price, and lifespan are also very important, so I won't introduce too much here.