采用1999～2010年面板数据的变截距及变系数模型，对中国31个省市的科技进步、教育经费投入与城乡收入差距之间的关系进行实证分析。结果显示：就全国而言，教育投入与城乡收入差距负相关，而科技进步与城乡收入差距正相关；就地区而言，绝大部分地区R&D科技投入的增长拉大了城乡收入差距，而半数以上的地区其教育投入对城乡收入差距的缩小有一定促进作用，但不同地区其影响效应呈现一定的差异性。其政策含义在于，可通过调整技术进步的要素偏向，加大教育投入并在科技研发领域建立城市反哺农村机制来缩小城乡收入差距，以此促进社会公平。%Based on 1999~2010 panel data model with variable coefficients , an empirical study on urban -rural income gap , R&D input and educational input of the 30 provinces in China has been conducted . The study shows that , for the country as a whole , it is beneficial for educational input to remarkably narrow urban -rural income gap , but it is not beneficial for R&D input to remarkably narrow urban-rural income gap in most regions . As for the specific provinces , R&D input widens urban-rural income gap in most regions , and educational input of more than half of the provinces remarkably narrow urban -rural income gap . But the effect of different regions shows some differences . The policy implication is that , through the factor adjustment technology progress , increasing investment in education and the establishment of regurgitation-feeding mechanism between urban and rural areas in the field of science and technology to narrow urban-rural income gap and promoting social fairness .
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