盐胁迫下4种盐生植物生长及耐盐性研究

Study on the Four Halophyte Species Growth Under salt Stress and its Salt Tolerance

[目的]为了利用野生的盐生植物改良盐碱地。[方法]以天津大港、西青和蓟县荒地土,采用盆栽试验对补血草、艾蒿、猪毛菜、草木樨4种野生盐生植物进行耐盐胁迫试验,测定株高、茎粗、鲜重、干重等生长指标。[结果]结果显示,4种植物的生长指标随着土壤盐碱度胁迫程度的不同变化明显,多为随盐碱胁迫的加重,株高降低,茎粗减少,干重降低。[结论]4种植物中补血草耐盐性最强,艾蒿和草木樨居中,猪毛菜最弱。

[Objective] The use of wild halophytes in the improvement of saline was experimented. [Method] The salt stress testing of four species of wild halophytes： Limonium,Artemisia,Salsola and Melilotoides,under potted cultivation in wasteland soil in Dagang, Xiqing and Jixian county of Tianjin was conducted and their growth indicators such as plant height, stem diameter, fresh weight, dry weight and other growth indicators were determined. [Results] The results showed that there were significant difference in growth indicators of four species of plants with the variation of salinity stress in soil and with strength of salinity stress, the plant height was shortened, the diameter of plant stem was reduced and the dry material was lessened. [Conclusion] Among four species of plants, the Limonium had the strongest salt-tolerance, Artemisia and Melilotoides were second in the salt-tolerance and the Salsola was weakest one.