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l elements ranging from nitrogen to calcium have replac〓ed the tilted soil. "The content of the nutrient solution is also tail〓ored to suit the plant's specific needs," said Pei Kequan, a research d〓irector at the factory. Unlike the trace elements from fertilizers, whi〓ch are locked in big compound molecules, "the nutrients in the solution〓 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 for a sapling to reach maturity in the lab, but 40 to〓 60

0 days in a conventional farm. This means scientists can reap more th〓an a dozen harvests of produce each year, compared with one to two harv〓ests from a conventional farms, depending on the weather conditions, he〓 said. Moreover, scientists at the facility have built the infrastruct〓ure to monitor the elements in the solution. Once an element is 1

deplete〓d, scientist can add the missing nutrient and reuse the solution withou〓t needing to make a new batch, thus reducing the cost. "We go to great〓 length to study and cater to our plant's most fundamental needs, makin〓g sure they could grow under the best conditions," Pei said. "In a way,〓 the plants are the kings, and we are all its servants." It's high tim〓e we find a sustainable and green way to protect our food security."BEIJING, Feb. 13 (Xinhua) -- China will tighten re9