柽柳的耐盐能力及其对滨海盐渍土的改良效果研究

Salt Tolerance Capability of Tamarix chinensis and the Effects on the Improvement of Coastal Saline Soil

[目的]为推动柽柳在盐渍土地区的种植与盐渍土的利用提供理论基础。[方法]在东营盐生植物园的盐池进行盆栽和田间耐盐试验,测定柽柳生长50 d后的平均株高、地径、分枝数和死亡率。[结果]柽柳的耐盐能力在25 g/kg左右,耐盐极限为35 g/kg左右;柽柳能够有效地降低土壤表层含盐量,增加土壤有机质含量,提高土壤中N、P、K的含量。[结论]柽柳是一种耐盐能力很强的盐生植物,对滨海盐渍土具有明显的改良作用。

[Objective] The research aimed to provide academic basis to improve and utilize the coastal saline soil by Tamarix chinensis.[Method] The potted and field experiment was carried out at Dongying Halophyte Garden.And the average height,basal diameter,branch number and mortality rate of Tamarix chinensis was detected after growed for 50 days.[Results] The capability of salt tolerance of Tamarix chinensis was around 25 g/kg and the utmost tolerance was around 35 g/kg.Planting Tamarix chinensis could reduce the salt content in topsoil effectively,and improve the content of soil organic matter,N,P and K.[Conclusion] The research proved that Tamarix chinensis was a kind of plant with significant salt tolerance capability and it had remarkable effects on the improvement of coastal saline soil.