Method for planting suaeda salsa in manganese saline-alkali soil and extracting plant salt

The invention belongs to the field of transformation and complex utilization of saline-alkali soil. The invention discloses an extraction method of suaeda salsa plant salt. The extraction method comprises the steps of saline-alkali soil selection, soil treatment, suaeda salsa planting and plant salt extraction, wherein the soil treatment comprises the step of planting radix phytolaccae and leersia hexandra in an interplanting manner at an interplanting ratio of 6:4 and with the planting density of 45 cm*45 cm. The plant salt prepared by the method has the manganese content of 1.2-2.0 mg/kg, and the method solves the problem that the manganese content in the plant salt extracted from the suaeda salsa planted in the low-manganese saline-alkali soil is too high. 本发明属于盐碱地改造以及综合利用领域。本发明公开了种盐地碱蓬植物盐的提取方法：包括盐碱地的选择、土壤处理、种植盐地碱蓬、植物盐提取；所述的土壤处理包括种植商陆、李氏禾，所述的种植商陆、李氏禾，采用间种方式种植；种植商陆、李氏禾的间种比例为6∶4，种植密度为45cm×45cm。采用本发明方法制备的植物盐，锰含量为1.2-2.0mg/Kg；解决了中低锰盐碱地种植盐地碱蓬提取的植物盐中锰含量过高的问题。