【Objective】Phytoremediation is an effective strategy for the remediation of heavy metal contaminated soil.Adding amendments is beneficial to improve the effect of phytoremediation.In this study,the compound modifiers(mushroom dregs and attapulgite)selected from the previous experiment were used in combination with Macleaya cordata to restore manganese slag.【Method】A pot experiment was carried out with manganese slag as the substrate,to determine the chlorophyll content,antioxidant system,subcellular distribution,chemical forms,microstructur...