Can sulfur powder and gypsum be used together to improve soil?

Sulfur powder is used to adjust the PH value of soil (reduce the PH value of alkaline soil) and adjust the absorption of mineral elements such as iron by plants. It needs to be dug into the soil by hand to a depth of 30 cm. Before large-scale garden planting, it is necessary to dig planting holes before last winter. This work is usually carried out at the same time as soil improvement measures, which usually takes about three months.