砂培 sand culture
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与水培的目的相同，即把同样的培养液加到砂中来培养高等植物的一种方法。和水培相比，其特征是根的氧气供应较好，更接近于自然状态。在进行精密试验中，要求不从砂中向培养液溶解出盐类和不吸附盐类，因此要用先用盐酸洗涤，然后再用水冲洗的石英砂。在更换培养液或试验后的处理等方面不如水培方法简便。
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