Can plant fill light technology really replace sunlight?
2023-05-10
Plant fill lights can completely replace sunlight, but the practical application of fill lights in greenhouses is mainly auxiliary, mainly using fill lights in bad weather conditions or at night to extend the lighting time, increase crop photosynthesis, and improve crop quality and taste.
Plant fill light is a type of lamp that uses light instead of sunlight to provide the necessary light source for plant growth and development, based on the natural laws of plant growth and the principle of using sunlight for photosynthesis.
The daily light exposure time for normal crops is about 11-14 hours, while the minimum in winter in northern China is only 7-8 hours, so at least 4-5 hours of supplementary light should be provided every day. Due to continuous insufficient light, the crops are in a sub healthy state, and the leaves begin to show yellow spots, wither, and even die in large areas. When using greenhouse to produce off-season crops, it is necessary to understand the requirements of various crops for light, especially fruit crops have more stringent requirements for light during fruit setting. Generally, young fruits fall off when the average sunshine is less than 11 hours. It is difficult to meet the requirements in winter by relying solely on natural light, and artificial light supplement should be considered.
(2) Greenhouse lighting effect
A large number of experimental results in the greenhouse show that the use of light compensation measures can not only meet the needs of normal growth of off-season crops in greenhouse. The overall growth of crops is significantly strengthened, and the fruits are plump and shiny, which can significantly improve the product. The supplementary lighting measures can ensure that the product is delivered and launched on schedule, maintaining a price advantage.
(3) Taking strawberries as an example for the application of plant fill light.
After one month of light supplementation (4 hours of light supplementation per day), the average plant height increased by 20%, the number of leaves per plant increased by 15%, the number of flowers increased by 50%, the number of fruits increased by more than 50%, and the fruit ripening period was advanced.
(1) LED plant light, containing 5050SMD LED 72pcs (red and blue); Has advantages such as high performance and low energy consumption;
(2) Can replace 80W high-pressure sodium lamp, saving 80% of electrical energy;
(5) The red light wavelength of LED is 620-630nm, and the blue light wavelength is 457-470nm. The red blue ratio can be selected as 7:1, 8:1, and 9:1 (more suitable wavelengths and color ratios can be selected independently to promote plant growth)
(6) Each stage and type of plant can be used.
(7) Long service life, with a normal service life of over 50000 hours.
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