新奇事件簿 科學(xué)家研究適合火星生長的蔬菜

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Scientists are trying to get humans to Mars. Researchers from the U.S. space agency NASA are currently trying to find out what kind of plants could grow in the red soil on Mars. They hope that astronauts will be able to start growing their own food on the Red Planet. The journey to Mars could take up to two-and-a-half years. The astronauts will need to take a lot of food with them just to last for the journey. They will never be able to return to Earth, which means they will need to grow their own fruit, vegetables and other plants from seeds. NASA said there could be a problem because Mars doesn't have soil that is good for growing things. It just has red dust.

科學(xué)家正努力將人類送上火星。來自美國太空署NASA的研究人員正在尋找哪種植物可以在火星紅色的土壤上生長。他們希望宇航員能夠在這個(gè)紅色星球上種植自己的食物?；鹦侵脤⒑馁M(fèi)兩年半的時(shí)間。宇航員必須自己攜帶足夠整個(gè)旅程的大量食物。他們或許永遠(yuǎn)都不能回到地球，這意味著他們需要自己種植水果，蔬菜和其他植物。NASA表示，可能有一個(gè)問題存在，因?yàn)榛鹦巧蠜]有適合種植作物的土壤。火星上只有紅色的粉塵。

Humans may be on their way to Mars in the next 15 years. NASA has been testing special "Martian gardens" to see what kind of things might grow on Mars. They have used a special soil made up of crushed volcanic rock. It contains no nutrients or organic material, so it is similar to the soil on Mars. The scientists managed to grow lettuce in it. They said the lettuce tasted normal, but it had weaker roots and took longer to grow. They will now try growing other vegetables. A NASA spokesman said: "Discoveries made in these Earth-based 'Martian gardens' will pave the way for future studies and technology development in terms of reliable, efficient food production a long way from Earth."

未來15年人類或許能夠踏上前往火星的征程。NASA正在測試特別的“火星花園”，看一下哪些植物可以在火星上生長。他們使用的是用壓碎的火山巖做成的特別的土壤。其中沒有任何營養(yǎng)或有機(jī)質(zhì)，所以類似火星上的土壤?？茖W(xué)家已經(jīng)成功地在上面種植了生菜。他們說種植出的生菜味道正常，但是根系比較弱，需要更長的時(shí)間來生長。他們現(xiàn)在準(zhǔn)備種植其他蔬菜。NASA一名發(fā)言人表示：“在地球上的這些火星菜園中的發(fā)現(xiàn)將為未來在遠(yuǎn)離地球的地方進(jìn)行可依賴的，有效的食物生產(chǎn)方面的研究和科技進(jìn)步鋪平道路。”