中文摘要：

在3种磷水平处理后,对23个大豆品种的叶片和根尖酸性磷酸酶活性、根冠比、干物质量、全磷含量及磷效率进行测定、比较和分析。结果表明,叶片或根尖酸性磷酸酶活性、叶片或根尖酸性磷酸酶活性相对值、根冠比,磷效率、磷效率相对值之间具有极显著差异（P

英文摘要：

Under three levels P stress treatment,shoot and root acid phosphatase activities,crown-root ratio,amount of dry matter,phosphate content,and P efficiency of 23 soybean cultivars were studied by determination,comparison and analysis.The result showed that there was significant variance among shoot or root acid phosphatase activities,relative value of shoot and root acid phosphatase activities,crown-root ratio,P efficiency,and relative value of P efficiency（P〈P0.01）;and root acid phosphatase activities were significantly correlated with root acid phosphatase activities and P efficiency（r=0.4535）,which is able to act as an important indicator to screen P highly-efficient cultivars.There existed a significant correlation（r=0.5070） between relative value of root acid phosphatase activity and P efficiency,which can be used as the important indicator for understanding tolerance to low P condition.