In subarid areas of Lai Chou, plot experiment was conducted to study the effects of soil-crop systems under saline aquaculture water irrigation and straw coverage conditions. The results showed that straw coverage could inhibit soil water evaporation, thus could maintain soil moisture; moreover, straw coverage could significantly reduce salt accumulation in surface soil layer and effectively alleviate crop salt stress due to the direct contact with salts. A high amount of salt, as a result of aquaculture water irrigation, could be leached out by low-frequency supplementary aquaculture water irrigation as well as natural rain water in the summer; the accumulated salts in soil was under control within salt-tolerant threshold of Jerusalem artichoke. Straw coverage could improve effectively plant morphology and increase significantly crop yield. Therefore, straw coverage is a reliable agronomic technique for the use of high saline water in the coastal salinized areas.