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凯时官网app_在线娱乐网站

Collect from /
  • 凯时官网app_在线娱乐网站

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    olutions, we do not 〓want germs to get into the liquid and make plants sick." Thanks to the〓 clean environment, plants can grow without antiseptics or pesticides, 9

    〓"you can even eat it fresh out of the bag", Zheng added. In addition t〓o sanitation, scientists also take temperatureU

    , humidity, air circulati〓on, light, carbon dioxide, nutrients and other elD

  • 凯时官网app_在线娱乐网站

    凯时官网app_在线娱乐网站

    ements into account to〓 create the "perfect environment" for growth. A tightly controlled env〓ironment not only maximizes growth potential, but also allows scienti2

    st〓s to create food that suits specific needs, Zheng said. For example, s〓cientists can lower the amount of potassium K

    from lettuce for patients w〓ith kidney problems or increase zinc in cabbage for childy

  • 凯时官网app_在线娱乐网站

    凯时官网app_在线娱乐网站

    ren by alterin〓g the nutrient solution and growing conditions. "This is the fundament〓al difference between a plant factory and conventional farm," he said. 〓"We T

    simply have extensive control over how and when our plants can grow〓, and let nature run its course in the most ideal c1

    onditions." The req〓uirements for plant growth fall into two broad categoris

  • 凯时官网app_在线娱乐网站

    凯时官网app_在线娱乐网站

    es: photosynthes〓is and soil nutrients. The sun accounts for 90 percent of all botanic 〓bioenergy through photosynthesis a process in which plants combine car〓bow

    n dioxide and water and turn them into carbohydrates and oxygen. Sunl〓ight is a bundle of different wavelengths of ligh9

    t across a wide spectr〓um from ultraviolet to infrared. Plants are "picky eaters thatx

  • 凯时官网app_在线娱乐网站

    凯时官网app_在线娱乐网站

    favor b〓lue and red lights", Li said. "If we can figure out what ratio and comb〓ination of lights are best suited for each plant's growth, then we can 〓change or9

    create LED lights that shine at that specific intensity and s〓pectrum, saving lots of energy in the process," he addedR

    . While blue a〓nd red lights are the "meat and potatoes" of a plant's growt4

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    h, scientis〓ts notice other spectrums of light also play a subtle role in maximizin〓g growth and quality. For example, scientists discovered that adding s〓ome greb

    en light to the red-blue recipe could help some vegetables grow,〓 while too much green light puts plants into hibernatiZ

    on, although this〓 is helpful for the plant's nutrient build up. "Mimicking sunlight O

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    usi〓ng LED is very energy intensive," Li said. "At the end of the day, whoe〓ver has the most energy-efficient and productive light recipe wins." W〓hile plant growX

    th mostly relies on light, water and carbon dioxide, it 〓still needs some trace elements from soil or fertilizers to be0

    healthy.〓 In the case of plant factories, hydroponic nutrient solutions inS

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    fused 〓with 17 essential elements ranging from nitrogen to calcium have replac〓ed the tilted soil. "The content of the nutrient solution is also tail〓ored to suitL

    the plant's specific needs," said Pei Kequan, a research d〓irector at the factory. Unlike the trace elements from fert6

    ilizers, whi〓ch are locked in big compound molecules, "the nutrients in the solution

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    ?are broken into small molecules, meaning the plant can absorb them eas〓ier and grow faster while keeping its nutrient value and taste". It ta〓kes about 20 days fU

    or a sapling to reach maturity in the lab, but 40 to〓 60 days in a conventional farm. This means scientists can reap mos

    re th〓an a dozen harvests of produce each year, compared with one to two haE

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    rv〓ests from a conventional farms, depending on the weather conditions, he〓 said. Moreover, scientists at the facility have built the infrastruct〓ure to monitor ty

    he elements in the solution. Once an element is deplete〓d, scientist can add the missing nutrient and reuse the solutioA

    n withou〓t needing to make a new batch, thus reducing the cost. "We go to great〓 len9

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