Soil salt dynamics of rice field under different controlled irrigation conditions

This study focused on exploring soil salt dynamics of rice field in main stages under different irrigation conditions, and the cause of salt movement regulation was studied via rice canopy leaf area index and actual evapotranspiration. Results obtained show that soil salinity decreases to further extent with the increase of leaching water, and the differences among irrigation systems were not significant in this research. All the four irrigation systems used in this study did not lead to observably salt accumulation and each of them has evident water-saving and yield-increasing efficacy. Rice controlling irrigation (treatment 1) was the best one of all the irrigation systems used in this study considering crop yield increasement. This study and results acquired provide academic and instructive meanings for rice irrigation management, especially in semi-arid or arid regions.