世界上的植物多达40多万种，它们靠根从土壤中吸收各种营养元素。有的植物除吸收大量的氮、磷＼钾等肥料外，还喜欢吸收少量的其它元素——有的吸收银，有的吸收锌…总之，各有各的口味。现在人们根据有些草的生长情况，就可以知道在它底下是否蕴藏着某种矿藏。这样，某些草就? As many as 400,000 species of plants in the world rely on roots to absorb various nutrients from the soil. In addition to some plants to absorb large amounts of nitrogen, phosphorus potassium and other fertilizers, but also like to absorb a small amount of other elements - some absorb silver, some absorb zinc ... In short, each has its own taste. Now people can tell whether there is some kind of mineral deposit underneath according to the growth of some grass. In this way, some grass?