被称为软黄金的蔺草，曾创收40亿，如今为何却很少有人种了？
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你听过蔺草吗？它曾是我国夏天必不可少的东西，为国家创造了40多亿的收入，被称为之绿色软黄金。然而，近些年来，种植蔺草的人越来越少不说，很多年轻人更是听都没听过它。这究竟是为什么呢？
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