东北三省是我国“一五”、“二五”计划时期发展起来的重工业基地,为社会主义工业化奠定了初步基础。但改革开放以来,曾经位居全国前列的东北三省工业生产发展缓慢,经济位次不断后移,到1990年,黑龙江、辽宁、吉林三省工业生产增长率分别为全国倒数第二、第四和第五,经济效益也 The three northeastern provinces are heavy industrial bases that have been developed during China’s “one five” and “two five” plans and laid the initial foundation for the industrialization of socialism. However, since the reform and opening up, the industrial production of the three northeastern provinces, which once ranked among the top in the country, has been slow to develop and the economic position has been continuously shifted. By 1990, the growth rate of industrial production in the three provinces of Heilongjiang, Liaoning, and Jilin was the penultimate, fourth, and fourth respectively. V. Economic benefits