LED plant lighting: the role and characteristics of different wavelengths

The effect of the spectral range on plant physiology 280 ~ 315nm;

The influence on morphology and physiological processes is extremely small 315 ~ 400nm;

Less chlorophyll absorption, affecting photoperiod effect, preventing stem elongation of 400 ~ 520nm (blue);

Chlorophyll and carotenoids have the highest absorption ratio, and the maximum impact on photosynthesis is 520 ~ 610nm (green);

The absorption rate of the pigment is not high 610 ~ 720nm (red);

The chlorophyll absorption rate is low, which has a significant effect on photosynthesis and photoperiod effect 720 ~ 1000nm;

Low absorption rate, stimulate cell elongation, affect flowering and seed germination>1000nm;

Converted into a thermal LED plant light feature:

1. The effects of different wavelengths of light on plant photosynthesis are different. The light required for photosynthesis in plants has a wavelength of about 400-700 nm. Light from 400-500 nm (blue) and 610-720 nm (red) contribute the most to photosynthesis.

2, blue (470nm) and red (630nm) LEDs, just to provide the light required by the plant, so the ideal choice is to use these two color combinations. In terms of visual effects, the red and blue combination of plant lights is pink.

3, blue light helps plant photosynthesis can promote green leaf growth, protein synthesis, fruit formation; red light can promote plant roots growth, help flowering results and prolong flowering, play a role in increasing yield!

4, LED plant lights red and blue LED ratio is generally between 4:1-9:1, usually 6-9:1.

5. When the plant light is used to fill the plant, the height of the blade is generally about 0.5-1 meters, and the continuous irradiation for 12-16 hours per day can completely replace the sunlight. 6, the effect is very significant, the growth rate is almost three times faster than the natural growth of plants.

7. Solve the lack of sunshine in the greenhouse in winter, promote the chlorophyll, anthocyanin and carotene needed in plant photosynthesis, so that fruits and vegetables can be harvested 20% earlier, increase the yield of 3 to 50%, and increase the sweetness of fruits and vegetables. And reduce 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 it can control the color of light. By using it alone to illuminate the plant, the plant variety can be improved.

9, LED plant growth lamp power is small, but the efficiency is very high, because other lights emit full spectrum, that is, there are 7 colors, and plants only need red and blue light, so most of the traditional light Wasted, so the efficiency is extremely low. The LED plant growth lamp can emit the specific red and blue light that the plant needs, so the efficiency is extremely high, which is why the LED plant growth lamp has a power of several watts better than the tens of watts or even hundreds of watts of power. Another reason is that the traditional sodium lamp spectrum lacks blue light, and the mercury lamp and the energy-saving lamp spectrum lack red light. Therefore, the traditional lamp fill light effect is much worse than the LED lamp, and the traditional lamp needs to save more than 90% of the energy. The cost is greatly reduced.

Advantages of LED plant lights:

1. No need for a standard power outlet connector for the drive or cooling fan.

2. The environment where red and blue wavelengths are required for plant growth.

3. Compared with other general lighting equipment, the LED plant light lamp line is mild and will not burn the seedling plants.

4. It can save 10%~20% of electricity bill compared with other plant lighting. 5. Blue light can promote the growth of plants, while red light causes plants to bloom.

As with plants grown outdoors, in addition to the effects of light, plant growth requires a combination of many other factors that affect plant growth, such as carbon dioxide concentration, ambient humidity temperature, air quality, moisture, and other nutrients.

From the perspective of indoor plant lighting, we advocate the use of LED plant growth lights, so how does LED plant lights affect plant growth?

LED plant lights control photoperiod to affect plant growth

The creatures on earth have their own working hours. People need to rest and work; animals need to be; same. Plants also have time to work and rest time, and we turn it into a photoperiod.

Plants grow in open-air nature, each plant has formed its own photoperiod genes, but due to various natural uncontrollable factors, their true growth talents have not been completely excavated, LED plant lights brought plants from outside to Indoor, various growth conditions can be completely artificially controlled, completely activating the growth cells of plants, and regulating the photoperiod of plants through LED plant lights, thereby affecting the growth of plants.

LED plant lights affect plant growth by controlling light intensity

Light intensity has a very important influence on plant cell proliferation and organ differentiation, which is important for plant growth. Different light intensity affects all stages of plant growth, and does not require too much light in the early stage of plant growth. It can meet the needs of plant germination and growth. As the plant grows, the light intensity should be increased appropriately. It is very important to the health and tidyness of the seedling. When the plant is flowering, the LED plant light directly affects the flowering and fruit setting rate. It also determines the yield and quality of this plant.

LED plant lights custom control light quality affects plant growth

Plant lighting LED plant growth lamp bead is mainly red light bead, blue light bead, white light bead and full spectrum lamp bead. The reason why these spectrum of lamp beads are used is because countless experiments prove that the most needed light for plant growth It is red light and blue light. LED plant light white light bead is to supplement other spectral components that may be needed for plant growth. The spectrum of full-spectrum LED plant lamp bead is mainly red-blue light, and the light quality is attractive to callus. As well as the differentiation of organs, the red spectrum plays a particularly important role in the flowering of plants.

The effect of LED plant lights on plant growth is mainly achieved by controlling light quality, light intensity and regulating the photoperiod of plants. When purchasing LED plant lights, special attention should be paid to the light intensity and light quality of the plants to be planted. Plant growth lamp.