? 千亿app

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hich plants combine car〓bon dioxide and water and turn them into carbohydrates and oxygen. Sunl〓ight is a bundle of differe2

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nt wavelengths of light across a wide spectr〓um from ultraviolet to infrared. Plants are "picky eaters that favor b〓lue anW

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d red lights", Li said. "If we can figure out what ratio and comb〓ination of lights are best suited for each plant's growthB

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, then we can 〓change or create LED lights that shine at that specific intensity and s〓pectrum, saving lots of energy in tj

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he process," he added. While blue a〓nd red lights are the "meat and potatoes" of a plant's growth, scientis〓ts notice othe7

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r spectrums of light also play a subtle role in maximizin〓g growth and quality. For example, scientists discovered that add7

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ing s〓ome green light to the red-blue recipe could help some vegetables grow,

?while too much green light puts plants into hibernation, although this〓 is helpful for the plant's nutrient build up. "Mimicking sunlight usi〓ng LED is very energy intensive," Li said. "At the end of the day, whoe〓ver has the most enW

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ergy-efficient and productive light recipe wins." W〓hile plant growth mostly relies on light, water and carbon dioxide, it 

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till needs some trace elements from soil or fertilizers to be healthy.〓 In the case of plant factories, hydroponic nutriee

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nt solutions infused 〓with 17 essential elements ranging from nitrogen to calcium have replac〓ed the tilted soil. "The cone

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tent of the nutrient solution is also tail〓ored to suit the plant's specific needs," said Pei Kequan, a research d〓irectorM

at the factory. Unlike the trace elements from fertilizers, whi〓ch are locked in big compound m4

olecules, "the nutrients in the solution〓 are broken into small molecules, meaning the plant cano

absorb them eas〓ier and grow faster while keeping its nutrient value and taste". It ta〓kes aboh

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