中文摘要：

为了筛选耐盐能源作物、挖掘利用盐渍土资源、促进农业可持续发展。以甘肃白银市东大沟盐渍化土壤作为研究对象，在大田试验条件采用对比研究的方法探讨种植四翅滨藜（Atriplex canescens）、油菜籽（Brassica na pus）、甜高粱（Sor ghum bicolor（L．）Moench）、荻（Triarrherca sacchariflora）、柳枝稷（Panicum virgatum）5种不同能源作物对土壤剖面盐分及其离子（HCO3-、Cl-、SO4^2-、K＋、Na＋、Ca＋、Mg2＋）迁移的影响。结果表明：在盐渍化土壤，种植柳枝稷、四翅滨藜能明显减少土壤剖面0-100cm土层盐分、Cl-、Na＋、Ca2＋、Mg2＋的含量，脱盐的同时会导致HCO3-在土壤剖面0-100cm土层累积。种植油菜可以抑制O50cm土层盐分的累积。种植荻可以抑制50-100cm土层盐分、0-10cm土层HC03、60-100cm土层SO4^2-的累积。种植柳枝稷可明显减少土壤剖面0-100cm土层K＋的含量。研究发现四翅滨藜、柳枝稷两处理的电导率均与其他处理之间达显著水平（P〈0．05），荻与其他处理之间水溶性Na＋含量均达显著水平（P〈0．05），柳枝稷与其他处理之间HCO3-含量均达极显著水平（P〈0．01）。

英文摘要：

In order to screen different energy crops with salinity tolerance, exploit the saline soils, and promote sustainable agriculture, the saline soils in Baiyin city of Gansu province were chosen as the research objects. A field experiment was carried out by comparative method so as to probe into the effects of 5 kinds of energy crops（Atriplecc canescens, Brassica napus, Sorghum bicolor （L.） Moench, Triarrherca sacchari flora, and Panicum virgatum ） on the content of soil salt and the transference of salt ions（HCO3 , Cl , SOa2 , K＋ , Na＋ , Ca2＋ and Mg2＋）. The results showed that planting Panicum virgatum and Atriplex canescens decreased the contents of salt, C1 , Na＋ , Ca2＋and Mg2＋ in the layers of 0--100 cm in saline soil. Meanwhile, the content of HCO3- increased in the layers of 0--100 cm in saline soil. Planting Brassica napus restrained salt accumulation in 0--50 cm soil layers. Planting Triarrherca sacchariflora restrained salt accumulation in 50--100 cm soil layers, the HCO3 accumulation in 0--100 cm soil layers and the SO42 accumulation in 60--100 cm soil layers, respectively. Planting Panicum virgatum obviously decreased the content of K＋ in 0--100 cm soil layers. It was found that the values of soil electrical conductivity in the treatments of Atripleac canescens and Panicum virgatum reached the significant level（P〈0.05） in comparison with those in other treatments. The content of water-soluble Na＋ in the treatment of Triarrherca treatments（P〈0. 05）. And the content of HCO3 sacchariflora significantly differed with that in other in the treatment of Panicum virgatum came to very significant level（P〈0.01） in contrast with that in other treatments.