中文摘要：

通过室内土柱模拟试验,研究了秸秆隔层（埋深25cm）和不同地下水位（深度60、80、100cm）对滨海盐渍土水盐运移的影响,在淋洗入渗阶段（阶段Ⅰ）和潜水蒸发阶段（阶段Ⅱ）分别测定土壤含水率和含盐量。结果表明：1阶段I秸秆隔层增大了隔层以上土层的土壤含水率,阶段II则相反;2阶段I秸秆隔层增强了灌水淋盐效果,阶段II秸秆隔层抑制了土表返盐;3秸秆隔层显著抑制了潜水蒸发。研究结果可为滨海地区盐碱地的开发利用提供依据和参考。

英文摘要：

This study examined the effects of straw interlayer（25cm in depth）and ground water tables（60,80,100 cm in depth,respectively）on water and salt dynamics of costal saline soil.Through simulated experiment,soil water and salt content were measured both in downward infiltration and water distribution process（Stage-1）and the upward capillary rise during the evaporation process under different ground water tables（Stage-2）.The results indicated that the treatments with straw interlayer increased the soil water content above the interlayer during stage-1,whereas the contrary results were observed for stage-2.Moreover,the straw interlayer could increase the leaching of salt in the upper soil to the deeper soil layer during stage-1and prohibit the accumulation of salt in the surface soil as well as reducing evaporation from shallow ground water during stage-2.The results could provide a reference for the exploitation and utilization of costal saline soil.