BACKGROUND: Soil salinization represents the most prevalent abiotic stress, severely impacting a severe impact on plant growth and crop yield. Consequently, delving into the mechanism through which exogenous substances enhance plant salt tolerance holds significant importance for the stabilization and augmentation of crop yield. RESULT: In this study, within the context of salt stress, the seedlings of R. soongorica were subjected to exogenous Ca CONCLUSION: The outcomes of this study are highly conducive to disclosing the mechanism through which the combined treatment of exogenous Ca