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随着地球上人口的增加,目前全世界正以每年700万公顷的速度损失可耕地。估计到2025年,由于海水侵蚀、盐碱化及淡水资源不足,世界上7000万亩可灌溉上地将再也无法耕种。于是,科学家们把目光转向了蔚蓝色的海洋:如果能用海水来浇灌农田,把荒芜的盐碱滩变成高产的绿洲,那该有多好啊! 其实,人类利用海水直接灌溉农作物的设想由来已久。但也有人认为这是异想天开的科学幻想,因为1000千克的海水中平均含有35千克的盐,用它来灌溉绿色植物,那不是在“腌咸菜吗? 有趣的是,前苏联科学家曾发现了一些“喜爱”海
With the increase of the population on Earth, the world is currently losing arable land at a rate of 7 million hectares per year. It is estimated that by 2025, due to the lack of seawater erosion, salinization and freshwater resources, the world’s 70 million mu of irrigation land will no longer be able to cultivate. As a result, scientists turned their attention to the blue ocean: If we can use seawater to irrigate farmland and turn deserted saline-alkaline beaches into high-yielding oasis, how good it is! Actually, humans use seawater to irrigate crops directly. For a long time. But some people think that this is a whimsical scientific illusion, because 1,000 kilograms of salt water contains an average of 35 kilograms of salt, use it to irrigate green plants, isn’t it “pickling pickles? Interestingly, the former Soviet scientists have discovered some ”Love" the sea