INFO:

肥料由氮和磷等营养物质组成。化肥的生产需要大量的能源。但是还有其他更自然、更容易获得的资源。密西根大学的一个项目正利用人类尿液生产肥料，以使我们的水更清洁，农业更具可持续性。

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科技 密西根 人类尿液 肥料

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密西根大学利用人类尿液生产肥料

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科技、 密西根、 人类尿液、 肥料、