我国钢铁企业的规模产出弹性和TFP估计

Elasticity of Scale Output and TFP Estimation of Iron and Steel Industry

用Levinsohn-Petrin方法对钢铁企业的超越对数生产函数进行估计,进而计算规模产出弹性和全要素生产率,发现钢铁企业的规模收益随着规模的扩大先递增后递减,目前大中型钢铁企业处在规模收益递减的区间,大中型钢铁企业的全要素生产率要高于小型钢铁企业。在钢铁行业的供给侧结构改革中,可以通过市场机制淘汰一些落后的小型钢铁企业,倒逼大中型钢铁企业进行技术改造和减少过剩产能。

After estimating the transcendental logarithmic production function of iron and steel enterprises with method of Levinsohn-Petrin and calculating the elasticity of scale output and the total factor productivity,it is found that the scale profits had the tendency of increasing at first and decrease later by the enlargement of its scale.Currently,the large and medium-sized enterprises are at the range of profit decrease and their total factor productivity is higher than that of the small ones.During the structural reform of iron and steel industry supply,it is advisable to call out some small enterprises that have lagged behind through market system,and close down some large and medium-sized company to conduct technical revolution and reduce excessive capacity.