Because the spectrum of LED grow lights can be designed, the spectrum of LED grow lights shows diversity, but the spectrum is not the best, only the most suitable for plant planting needs, so when choosing or customizing, you must use the plant to be planted. The spectrum shall prevail.
Luminaire efficiency of LED grow lights
The luminaire efficiency of the LED grow light is the ratio of the PPF value of the luminaire to the PPF value of the light source. This value is less than 1, which is related to the light distribution design of the secondary optics. The efficiency of the LED grow light is usually between 0.9-0.5, which affects the efficiency of the lamp. The energy consumption index and planting efficiency of the lamp, the efficiency of the LED grow light lamp with the lens design will not exceed 0.8.
About spectral ratio
When many LED grow lights are talking about the spectrum ratio, this issue requires understanding of the LED chip supply specifications. LED chips are graded and supplied according to the radiant power of the same chip size. The spectrum of LED grow lights provided according to the lamp bead ratio may be There will be a 30% deviation in the ratio, which is one of the reasons why the planting effects of different batches of the same product are different. The correct spectrum ratio is the radiant power ratio of the RGB band according to the PAR wavelength range, so that the products provided will have a data basis.
Uniformity of radiation surface and radiation field
For the LED grow lamp spectrum with a combination of multiple single-wavelength lamp beads, the uniformity of the radiation surface after the multiple radiation is mixed needs to be considered, mainly the arrangement of the lamp beads, the light distribution design, the installation height of the lamps, etc.; the uniformity of the radiation field For the three-dimensional planting of the shelf structure, and for the LED grow light with lens, it is necessary to make it clear that increasing the installation height to improve the uniformity of the radiation surface results in the reduction of the PPFD value by the square of the distance.
Features of full-spectrum LED grow lights:
1. Increase yield: The energy required for plant growth comes from the photosynthesis of plants, and full-spectrum LED grow lights can supplement light to plants when the light is insufficient, and promote the accumulation of plant dry matter, thus achieving the purpose of increasing yield.
2. Market early: Full-spectrum LED grow lights can shorten the growth cycle of plants, and can make crops go on the market 7-15 days in advance, which greatly increases the economic income of users.
3. High luminous efficiency: 90% of the light emitted by full-spectrum LED grow lights can be absorbed by plants. Traditional plant lights such as high-pressure sodium lamps and metal halide lamps can only absorb 8-10% of the light during photosynthesis.
4. Low power consumption: The full-spectrum LED grow light consumes very little power, so users do not have to worry about the cost of the fill light.
5. Long lifespan: Full-spectrum LED grow lights have an extremely long lifespan, with an ultra-long lifespan of 50,000 hours.
6. Environmental protection: The full-spectrum LED grow light is safe, environmentally friendly and does not contain toxic mercury. Our LED grow lights use 10%-30% more energy than traditional lights. Consuming less energy can reduce greenhouse gas emissions into our environment.
The plant growth process generally includes seed germination, leaf development, flowering, and fruiting stages. The transition from seed to seedling to mature plant can be achieved. We can shorten the growth cycle of crops by customizing the spectrum.
When light shines on the plant, the light energy is captured by the pigment in the leaf chloroplast, which absorbs most of the blue and red light. Therefore, in different environments, plants have formed different adaptation strategies in the long-term adaptation and genetics. , There are sun plants, shade plants and shade-tolerant plants.
Different target organs have different spectra. For example, in the cultivation of leafy vegetables, what we need is leaves, while solanum fruits are for fruits. For rhizomes, we need tubers. The target organs are inconsistent. There are big differences in physiological and biological characteristics, and there may also be differences in spectra. . Depending on the purpose of the implementer, the spectrum is also different. For example, by appropriately increasing the far-red light content of LED grow lights to promote early flowering, using ultraviolet light to increase the content of secondary metabolites and so on. Differences in reproduction methods will also affect the use of the spectrum. For example, tissue culture, cuttings, grafting, substrate culture and hydroponics and other propagation methods are quite different, which will affect the selection of the spectrum.
