It’s all plant light. Why isn’t yours working?

When winter comes, many planting novices choose plant fill light lamps, they often feel that the higher the power, the better the fill light effect. But there are still yellow leaves, barren problems, where is the problem?

Before exploring the problem, let’s briefly review the relationship between plants and light.

We all know that everything depends on the sun to grow, and plants need to accumulate dry matter through photosynthesis to grow, just like children continue to supplement nutrition in order to grow tall and strong.

When the organic matter produced by photosynthesis during the day = the matter consumed by respiration at night, it indicates that the light intensity during the day is the light compensation point of the plant. Higher than the light compensation point, continue to grow, lower than the light compensation point, self-consumption, and eventually die.

Of course, the amount of light a plant can receive also has a “maximum” : a light saturation point, beyond which light suppression can also occur, hindering growth.

We generally use the photon flux density PPFD (unit: umol/s/m2) to measure the light intensity. For example, tomato light compensation point: 53 umol/s/m2, light saturation point: 1985 umol/s/m2; Rose light compensation point: 62 umol/s/m2, light saturation point: 596umol/s/m2.

What are the possible causes of “ineffective” fill light?

① Irradiation distance

Many small partners will wonder: how far away should the lamp be from the plant? Is it possible to fill in the light wherever it hits?

In fact, the irradiation distance also determines the intensity of the light, and it is not “illuminated”. In the instructions for the use of general plant fill light, the irradiation distance reference is given, which can be adjusted according to the PPFD value of their own plants.

② Focus light and do not astigmatism

Although artificial light can simulate the solar spectrum, but can not completely replace the intensity of sunlight, so the limited light gathered on the plant, in order to reduce the loss of light energy and electric energy, faster to achieve the desired effect, which is why the same wattage, the same time, the effect is different.

To determine whether the light is focused, you can observe whether the light has a clear edge. At present, the “concentrating lens” is an effective optical technology for focusing the light, to achieve the purpose of improving the PPFD photon flux density, light intensity and uniformity, so as to meet the photosynthetic needs of plants faster.

“Full spectrum” is not universal

Plant fill light is mainly divided into full spectrum and red and blue spectrum, many small partners mistakenly believe that the full spectrum desk lamp and full spectrum ceiling lamp bought at home are the same.

Although they are named the same, the full spectrum is not a fixed spectrum, for example, the full spectrum plant lamp has more green light energy, the red peak wavelength is 660nm, and the red peak wavelength of the ordinary white lamp is about 610nm, which is not suitable for plant growth.

④ “internal work” is not enough light decay serious

Those who have used the plant fill light lamp know that the fill light lamp has a long time and a large heat, the LED chip is easier to age, and it is gradually not bright, which is light failure, the PPFD value is decreased, the plant photosynthesis efficiency is reduced, and the effect and life are only “flash in the pan”.

When we choose the lamp, we can pay more attention to heat dissipation, and if there is a patented heat dissipation technology, it will be more guaranteed.

⑤ Imagine business promotion

For example, businesses in the promotion of 10 watts of light equivalent to 100 watts incandescent lamp, may be the best in the same power of plant light, but do not think that 10 watts can really replace the effect of 100 watts, is unable to achieve the desired effect.