盐分能诱导土壤锰的释放 .Na+和Ca2 +的离子交换作用促进了土壤锰向水溶液中释放 ,提高了土壤锰的有效性 ;同时 ,盐分降低了土壤的 pH值 ,并使土壤氧化还原电位发生变化 ,引起土壤中锰形态间的转化 .NO- 3 离子对氧化还原电位影响显著 ,硝酸盐处理土壤中易还原态锰含量显著增加 Salt can induce the release of manganese in soil, and the ion exchange of Na + and Ca2 + promoted the release of manganese into aqueous solution and increased the availability of manganese in soil. At the same time, salt decreased the pH of soil and led to the redox potential of soil Changes, causing the transformation of manganese in soil form.NO- 3 ion has a significant impact on the redox potential, nitrate content of soil easily reduced manganese increased significantly