It takes an enormous amount of water to produce crops: one to three cubic metres to yield just one kilo of rice,and 1,000 tons of water to produce one ton of grain.

 
  • 作物生产耗水量巨大: 仅生产一公斤稻米便需要一至三立方米水,生产一吨谷物则需要1 000吨水。
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