Comprehensive utilization of phosphorus slag (PS) is crucial to achieve sustainable resource utilization. However, only few systematic studies have been conducted on returning PS to fields. In this study, effects of PS on the soil microenvironment and planting were investigated in detail using simulations of returning PS to fields. The results showed that returning PS to fields would not cause heavy metal pollution in the soil. At the end of the experiment, the soil physicochemical properties revealed that PS addition (5% and 20% mass ratio) resulted in a slight increase in soil pH, which indi...
