盐碱胁迫是影响果树生长发育最严重的限制因子之一。果树受盐碱胁迫后根系生长受阻、叶片变小、发育迟缓，造成植株矮化、早衰甚至死亡。从细胞膜透性、POD、SOD等生理特性方面分析了果树对盐碱复合胁迫的响应机制，多角度分析了果树抗盐碱的分子机理。

Salt-alkali stress is one of the most serious limiting factors affecting the growth and development of fruit trees. The root growth of fruit trees under salt-alkali stress was blocked， leaves became smaller， growth retarded， resulting in plant dwarfing， premature senility and even death. In this paper， the response mechanism of plants to salt-alkali combined stress was analyzed from the aspects of osmotic regulation， cell membrane permeability、 POD、 SOD、 etc. And the molecular mechanism of salt-alkali resistance of fruit trees was summarized from various angles.

S156.4

国家自然科学基金项目(31760558)；国家现代农业产业技术体系项目(CARS-30-1-6)。