关键词: 盐胁迫, 沙枣, 拒盐, 耐盐, 光合速率, 蒸腾速率

Abstract: The seedlings of Elaeagnus angustifolia were planted in the nature saline soil and the sand culture of artifical salinization in different levels. The growth, photosynthetic and transpiration rate as well as the Na⁺ and K⁺ contents in leaves were determined. The results of field experiments showed that it could grow and develop normally in the saline soil whose salt content was 0.8-1.2%. Its photosynthesis and transpiration were normal. The experiment results of sand culture showed that 100mM NaCl had no influence on the growth of the seedlings, the Na⁺ content increased and K⁺ content decreased as NaCl content increased above 100mM. This showed that E. angustifolia could not exclude salt, but it hadan ability to salt toleranee. Moreover, the degree of leaf succelence increased under salt stress conditions which was the expression of preventing salt.

Key words: Salt stress, ^{E. angustifolia}, Salt exelusion, Salt dilution, Photosynthetic rate, Transpiration rate