When the rainy season arrives, sunlight has become a rarity.
For lovers of growing succulents or succulent planting, it can be said to be anxious.
Succulents love sunlight and like a ventilated environment. The lack of light will make them thin and tall, making them ugly. Inadequate ventilation can also cause their roots to rot, and fleshy ones can wilt or even die.
Many friends who grow succulents choose to use plant lights to fill up the succulents.
So, how to choose fill light?
Let’s first understand the effects of different wavelengths of light on plants:
280 ~ 315nm: minimal impact on morphology and physiological processes;
315 ~ 400nm: Less absorption of chlorophyll, which affects the photoperiod effect and prevents stem elongation;
400 ~ 520nm (blue): The absorption ratio of chlorophyll and carotenoids is the largest, and has the greatest impact on photosynthesis;
520 ~ 610nm (green): the absorption rate of the pigment is not high;
610 ~ 720nm (red): Low chlorophyll absorption rate, which has a significant impact on photosynthesis and photoperiod effects;
720 ~ 1000nm: Low absorption rate, stimulate cell elongation, affect flowering and seed germination;
＞1000nm: Converted into heat.
Many friends have bought all kinds of so-called plant growth lights on the Internet, and some say they are effective after using them up, and some say they are not effective at all. What is the real situation? Your light doesn’t work, it’s probably because you bought the wrong light.
The difference between plant growth lights and ordinary lights:
The picture shows the entire visible light spectrum (sunlight). It can be seen that the wave band that can promote plant growth is basically biased towards red and blue, which is the area covered by the green line in the picture. This is why the so-called LED plant growth lamps bought online use red and blue lamp beads.
Learn more about the characteristics and functions of LED plant lights:
1. Different wavelengths of light have different effects on plant photosynthesis. The light required for plant photosynthesis has a wavelength of about 400-700nm. 400-500nm (blue) light and 610-720nm (red) contribute the most to photosynthesis.
2. Blue (470nm) and red (630nm) LEDs can just provide the light needed by plants, so the ideal choice is to use a combination of these two colors. In terms of visual effects, the red and blue plant lights are pink.
3. Blue light helps plant photosynthesis, which can promote green leaf growth, protein synthesis, and fruit formation; red light can promote plant rhizome growth, help flowering and fruiting and prolong flowering, and increase yield!
4. The ratio of red and blue LEDs of LED plant lights is generally between 4:1--9:1, usually 6-9:1.
5. When plant lights are used to supplement light for plants, the height from the leaves is generally about 0.5-1 meters, and continuous exposure for 12-16 hours a day can completely replace the sun.
6. The effect is very significant, and the growth rate is almost 3 times faster than that of ordinary plants that grow naturally.
7. Solve the problem of lack of sunlight during the rainy days or in the greenhouse in winter, and promote the chlorophyll, anthocyanin and carotene needed in plant photosynthesis, so that fruits and vegetables are harvested 20% earlier, increasing the yield by 3 to 50%, and even more. The sweetness of fruits and vegetables reduces pests and diseases.
8. LED light source is also called semiconductor light source. This kind of light source has a relatively narrow wavelength and can emit light of a specific wavelength, so the color of the light can be controlled. Using it to irradiate plants alone can improve plant varieties.
9. LED plant growth lights have low power but extremely high efficiency, because other lights emit a full spectrum, that is to say, there are 7 colors, but what plants need is red light and blue light, so most of the light energy of traditional lights is Wasted, so the efficiency is extremely low. The LED plant growth lamp can emit specific red and blue light that plants need, so the efficiency is extremely high. This is why the power of a few watts of the LED plant growth lamp is better than the lamp with a power of tens of watts or even hundreds of watts.
Another reason is the lack of blue light in the spectrum of traditional sodium lamps, and the lack of red light in the spectrum of mercury lamps and energy-saving lamps. Therefore, the supplementary light effect of traditional lamps is much worse than that of LED lamps, and it saves more than 90% of energy compared with traditional lamps. The cost is greatly reduced.
Post time: Apr-06-2021