Method for repairing cadmium-polluted rice field by intercropping sedum alfredii hance and astragalus sinicus

The invention discloses a method for repairing a cadmium-polluted rice field by intercropping sedum alfredii hance and astragalus sinicus. The sedum alfredii hance and the astragalus sinicus are planted in an idle rice field in winter, so that effective utilization of land resources and photo-thermal resources is realized, and idle land in the slack winter season and resource waste are avoided while soil of the low-concentration cadmium-polluted rice field is repaired; and the astragalus sinicus can be used as organic green manure; and the sedum alfredii hance and the astragalus sinicus are intercropped, so that cadmium in the soil is effectively removed, and therefore, post-cropping rice absorbs less cadmium. 本发明公开了一种利用东南景天和紫云英间作修复镉污染稻田的方法，在冬季闲置稻田上种植东南景天和紫云英，实现土地资源和光热资源的有效利用，修复中低浓度镉污染稻田土壤的同时，避免了冬闲抛荒和资源浪费，紫云英可作为有机绿肥，东南景天和紫云英间作有效去除土壤中的镉，使后作水稻更少吸收镉。