Abstract: Field experiments were conducted to investigate the characteristics of soluble salt contents and main salt contents of rhizosphere soil from four different salt-tolerant plants and comparison treatment.The aim of these experiments was to reveal the salt contents difference between the rhizosphere soil of four salt-tolerant plants and comparison treatment.The results showed that four salt-tolerant plants treatments had obvious function of restraining salt accumulation in surface layer.Sesbania cannabina Pers.had best effects on restrainting the accumulation of soil salinity in surface layer and 0-80 cm layers.The reduced water-soluble salt sequence in surface layer from high to low was Sesbania cannabina>Sorghum sudanense>Medicago sativa>Suaeda salsa on October,18th,2013;the reduced water-saluble salt sequence from high to low for all over the 0-80 cm layers was Sesbania cannabina>Medicago sativa>Sorghum sudanense>Suaeda salsa. HCO₃^-,Cl^- and SO₄^2- exhibited enrichment in 0-10 cm layer of comparison treatment;Na⁺ and Cl^- reduced significantly in the rhizosphere soil of four tested plants than comparison treatment for 0-10 cm and 10-20 cm layers.Ca²⁺ increased significantly in the rhizosphere soil of four tested plants than comparison treatment among the whole layers.More and more Na⁺ was replaced by Ca²⁺ with the cultivating four salt-tolerant plants,therefore the effects was extremely obvious for Na⁺ removement by planting salt-tolerant plants.

Key words: Soil, Salt-tolerant, plants, Soluble, salt, Soil, ions

CLC Number: 

• S156.4