Studies on utilization of saline aquaculture water and measures to reduce evaporation and salt accumulation in subarid coastal zones
滨海盐渍区海水养殖废水利用与减蒸抑盐措施研究

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.