This paper uses ratio of increment output value to capital, looking back marginal efficiency of steel investment, and then deeply takes apart issues of low marginal efficiency of steel investment, which results from over -heat investment, gives an empirical analysis to the validity of China s discretional monetary policy.
本文采用增量产出资本比等指标对钢铁行业边际投资效率进行了历史回顾与分析,并对近期因投资过热而将引发的投资效率低下问题深入剖析,对相机选择经济政策中的有关货币政策的有效性进行实证研究,结果表明:央行相机出台的紧缩性货币政策通过传导机制,滞后性地抑制了下游行业对钢铁的需求,具有间接调控的作用,并有效降低钢铁投资规模,有利于优化钢铁投资结构;在相机经济政策背景下钢铁边际投资效率大起大落的风险将得以规避。