According to the practical soil conditions in the Yellow River Delta and the special characteristics of the coastal saline soil

this article does research on improving saline soil by using the saline-alkali soil amendments. Four kinds of saline-alkali soil amendments were experimented on middle salinity and heavy salinity soil. Then we measured the soil salt content and the output of crops

and synthetically analyzed the result. Finally we filtrated the best amendment that is suitable to the coastal saline soil. The result of this experiment showed that all of these saline-alkali soil amendments could reduce the soil salt content

and the effect of the saline soil restoration material was the best. It is the most suitable saline-alkali soil amendment on the coastal saline soil.