With maize as the research object

we conducted a pot experiment to firstly explore the soil improvement effects of desulfurization gypsum

vermicompost

sulfur

furfural residue and zeolite

then designed the appropriate combinations of ameliorants for both improving maize growth and soil properties. The results showed that the average pH value in the 0—20 cm soil layer with desulfurization gypsum

sulfur

furfural residue

vermicompost and zeolite treatments were decreased by 0.05～0.19 units under the slight saline-alkali conditions

and by 0.20～0.33 units under the moderate saline-alkali conditions

compared to the control treatment. In addition

desulfurization gypsum significantly reduced soil water-soluble Na+ content in the 0—20 cm soil layer. According to the improved characteristics of different ameliorants

two combinations ameliorants of T1 (desulfurization gypsum + sulfur + vermicompost) and T2 (vermicompost + zeolite + desulfurization gypsum + furfural residue) with comprehensive improvement effect were designed. These two combinations significantly increased maize biomass by 77.75% and 129.22% under the slight saline-alkali conditions

and by 148.13% and 170.31% under the moderate saline-alkali conditions

respectively. Meanwhile

they reduced the pH value of 0—20 cm surface soil. In conclusion

the application of the comprehensive ameliorants in coastal saline soils could promote crop growth and improve soil properties

which could be used as one of the important measures for the rapid improvement of coastal saline soil in the future.