Green　approaches　are　much　more　appreciable　during　the　present　scenario.　Soil　amendments　are　frequently　applied　for　improving　water　use　efficiency,　reducing　soil　salinity　in　arid　and　semi-arid　areas,　controlling　the　secondary　salinization　of　cultivated　soils,　and　increasing　the　carbon　sequestration　capacity　of　soils.　Thus,　lab　soil　column　simulation　experiments　and　field　experiments　were　carried　out　to　evaluate　these　functions　of　two　separate　amendments,　polyacrylamide-based　super　absorbent　polymer　(SAP)　and　corn　straw　biochar　at　different　application　rates.　The　simulation　experiments　showed　that　both　SAP　and　biochar　inhibited　the　accumulation　of　soil　salinity,　with　a　reduced　rate　of　9.7-26.3%　and　13.5-37.2%,　respectively,　dependent　on　the　amendment　application　rates.　The　field　experiments　found　different　salt　inhibition　effects　of　the　two　amendments　with　growth　stages　of　maize.　Soil　salinization　was　inhibited　in　the　pre-germination　and　early　jointing　stages　by　SAP,　but　throughout　the　whole　growth　period　by　biochar.　Both　soil　amendments　reduced　soil　electrical　conductivity,　and　biochar　increased　the　soil　contents　of　Ca2+,　Mg2+,　and　K+.　Our　observations　demonstrated　that　application　of　biochar　and　SAP　played　important　roles　in　increasing　soil　fertility　and　inhibiting　soil　salt　accumulation.　It　provided　an　effective　method　to　potentially　mitigate　the　environmental　crisis　and　promote　sustainable　development　in　agriculture.