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近几年某些大中型钢铁企业经济效益欠佳,原因大都与投资失误有关。现对“七五”以来钢铁工业投资效益及影响投资效益的主要因素稍作剖析。一、全行业投资效益比较综合评价投资效益,通常使用“投资效益率”指标。为减少年度波动的影响,并适当考虑投入在前、产出滞后的因素,把计算期延长为5年;表2计算了产出滞后2～3年的投资效益率作为参考指标。(一)全行业投资效益率比较
In recent years, the economic results of some large and medium-sized iron and steel enterprises have been poor. Most of the reasons are related to investment errors. The main factors affecting the investment efficiency of the iron and steel industry and the impact on investment returns since the 7th Five-Year Plan are briefly analyzed. I. Comparison of Investment Efficiency across the Industry Comprehensive evaluation of investment returns usually uses the “investment efficiency ratio” indicator. In order to reduce the impact of annual fluctuations, and appropriately consider the factors of lagging in input and output, the calculation period was extended to 5 years. Table 2 calculates the investment efficiency rate of output lagging by 2 to 3 years as a reference indicator. (I) Comparison of Investment Benefit Ratio in the Whole Industry