Scientists applied desulfurization ash from some power plants to 40 mu of saline-alkali land in Inner Mongolia. As a result, corn and grass grew in this land. The scientists concluded that the desulfurized ash from coal-fired power plants can be used to transform saline-alkali land.
The main component of desulfurization ash is gypsum, and the use of gypsum to improve saline-alkali land has a history of more than 100 years, if true, best supports the scientist's conclusion.