生产上,作物主要从土壤获得矿质元素。土壤中的矿质以三种状态存在:一部分存在于土壤溶液中,大部分吸附在土壤胶体上,还有一部分以难溶盐类的状态存在。作物根系对这三种状态的矿质盐类都能吸收,以吸收土壤溶液中的矿质盐最普遍而重要。至于根系吸收矿质有何特点,吸收机理如何,以及吸入体内的矿质元素怎样转运,是 In production, crops are mainly derived from the soil mineral elements. Minerals in the soil exist in three states: some exist in the soil solution, most of the adsorption in soil colloids, there are some in the state of insoluble salts exist. Crop roots can absorb all three types of mineral salts to absorb mineral salts in soil solutions, most prevalent and important. As for the root absorption of mineral characteristics, how the absorption mechanism, as well as the mineral elements inhaled how to transport, is