What is the difference between led plant growth lights and ordinary lighting
Everything grows by the sun, and light plays a vital role in the growth of plants. However, the light environment is different under different geographical conditions. In order to increase crop yield, improve crop quality, and control the growth cycle, various types of LED plant growth lights have been widely used in indoor planting and greenhouse planting. What is the difference between LED plant growth lights and general lighting? Let's take a look at this issue.
PPFD: photosynthetic photon flux density
PPFD is an important indicator to measure the performance of led plant growth lamps, and is the acronym for Photosynthetic Photon Flux Density. The unit is umol/m2/s, which means the PPF within one square meter. PPFD measures the number of photons falling on the plant. It can be tested or simulated by a tester or software. In addition to being affected by its own lamps, the PPFD value is affected by the height and surface reflectance of plants and lamps, which is inversely proportional to the square of the irradiation distance.
PAR: photosynthetically active radiation
PAR is the acronym of Photosynthetic Active Radiation in the English word Photosynthetic Active Radiation, which specifically refers to the wavelength of 400~700nm used by LED plants for photosynthesis. There are two labeling units, one is expressed in photosynthetic irradiance (w/m2), which is mainly used for generalized research on photosynthesis of sunlight, and the other is expressed in photosynthetic photon flux density PPFD, which is mainly used for artificial light sources. That is, the research of plant growth lamp on plant photosynthesis.
PPF: photosynthetic photon flux
PPF is the acronym of Photosynthetic Photon Flux in the English word Photosynthetic Photon Flux. The unit is umol/s. It indicates how many photosynthetic photons can be emitted by a led plant growth lamp in one second. When designing and formulating the spectral shape of plant lights, PPF is It has been decided, and the value is measured with an integrating sphere.
Difference 1:
Led plant growth lights are made according to the principle that plants use sunlight for photosynthesis. Nowadays, there are mainly full-spectrum and red-blue spectrum plant growth lights that are popular on the market. The spectrum of the full-spectrum LED plant growth lamp is mainly in the visible light band of 400nm~720nm (except for the green light band), and the red and blue spectrum led plant growth lamp spectrum band is mainly concentrated in the red and blue bands. The spectrum of ordinary lighting lamps is not as concentrated as that of plant growth lamps, and the different spectrums of lamp beads used by different manufacturers are also relatively large.
This also means that the same one kilowatt-hour of electricity, the light energy after the conversion of the LED plant growth lamp can be effectively used by the plant, and when the ordinary lighting lamp is used to fill the plant, a large part of the light energy that is useless to the plant is wasted. Up.
Difference 2:
The led plant growth light is aimed at plants, which is mainly to provide sufficient light for plant growth, so as to allow plants to grow healthily. The general lighting fixtures are mainly for people to illuminate or decorate, and the two should not be confused.
Therefore, it is recommended to choose a professional LED plant supplement light when adding light to plants. The Yaorong lamp series products specially designed for roses, tomatoes and other high-light-needing plants have significant advantages. The products sell well both at home and abroad, effectively solving the problem of low light and low light for indoor plants in different geographical areas such as high latitudes, alpine cold, dense fog, and rain.
LED full-spectrum imitates sunlight, cares for the growth of plants
Sunlight contains ultraviolet light, visible light and infrared light. Most of the ultraviolet light reaching the surface is absorbed and filtered by the ozone layer. The visible light band is the main role for the growth stage of plants. Light requirements during growth.
High-quality ceramics sintered at a high temperature of 1600°C are used as the heat sink, which has good heat dissipation and makes up for the hidden dangers of traditional aluminum substrate leakage. The hollow appearance design increases the efficiency of natural convection, the ventilation and heat dissipation have low light decay, and the performance is stable.
