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在代换性复杂的碳酸盐土壤中,石膏是补充Ca离子来置换Na离子过剩的传统之物。巴基斯坦的大部分土壤是石灰质的碳酸盐土。用酸溶解自然的CaCO_2分离Ca,然后才能在交换性的络合物中置换出Na,这一过程已经被用于改良碳酸盐石灰土了(Poonia和Bhambla等)。
In substitutionally complex carbonate soils, gypsum is a traditional replacement of Ca ions to replace excess Na ions. Most of Pakistan’s soil is calcareous carbonate soil. The process of acid-solubilizing natural CaCO 2 to separate Ca and then displacing Na in the exchangeable complex has been used to modify carbonate limestone (Poonia and Bhambla et al.).