Description
土壤是包含了有机质和矿物质，是一个巨大的生物库，一克土壤里有十几亿个微生物。土壤起到了清洁器和过滤器的功能，越黑的土壤代表其中的有机质越高，黑土地的粮食产量也更高，但是由于大量使用化肥，导致土壤退化，带来了环境问题。为什么东北黑土地被称为“国家粮仓”？如何改变不合理的耕作制度？怎么让土壤有机质恢复？“格致论道”是中国科学院全力推出、中国科普博览承办的科学讲坛，致力于精英思想的跨界传播。登录官方网站（self.org.cn）、微信公众号“SELFtalks”获取更多信息。
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