研究了在土壤自然干旱的水分胁迫条件下，干旱诱导的小麦叶片衰老与小麦叶片内源多胺水平之间的关系。结果表明，土壤干旱促进小麦幼苗衰老，不同处理间内源多胺水平与水分、蛋白质和核酸代谢之间存在一定的相关性，较高的内源多胺水平有利于小麦叶片在水分胁迫过程中保持较好的水分状况，延缓蛋白质和核酸的降解 The relationship between drought-induced wheat leaf senescence and endogenous polyamines levels in wheat leaves under drought stress was studied. The results showed that soil drought promoted the senescence of wheat seedlings. There was a certain correlation between endogenous polyamines level and water, protein and nucleic acid metabolism in different treatments. Higher levels of endogenous polyamines were beneficial to wheat leaf during water stress Maintain good water conditions, delaying the degradation of proteins and nucleic acids