【摘要】 采用温室盆栽试验的方法，研究了ＮａＣｌ胁迫下施氮对大麦幼苗Ｎａ＋、Ｋ＋含量，净光合速率和植株生长的影响．Ｎａｃｌ处理降低幼苗Ｎ、Ｋ＋累积量．施Ｎ（１００，２００ｍｇ／ｋｇ）可以减少幼苗地上部的Ｎａ＋含量，增加含Ｋ＋量和Ｋ＋向上运输的选择性，降低第３叶的电解质渗出率；叶片的净光合速率和生长速率及幼苗干物重均因施氮而提高更多还原

【Abstract】 Pot experiments were conducted in greenhouse to study the effect of nitrogen on the contents of sodium and potassium, net photosynthetic rate and growth of barley seedlings under salinity The results indicated that the application of nitrogen(100 and 200 mg/kg) increased the K content in shoots and K:Na selectivity ratio(SRK. Na) of transportation to shoot, but decreased the Na content in shoots and electrolyte leakage percentage of the third leaf. The net photosynthetic rates and growth rates of leaves increased with added nitrogen.更多还原