公共科研投资、技术创新与水稻生产率增长——基于动态理论的实证分析  

The relationship between public R&D investment,technology innovations and productivity growth of rice in China

作　　者：展进涛[1] 陈超[1] 廖西元[2] 

机构地区：[1]南京农业大学经济管理学院,江苏南京210095 [2]中国水稻研究所,浙江杭州310006

出　　处：《科研管理》2011年第1期45-51,共7页Science Research Management

基　　金：国家自然科学基金项目(70973054)资助

摘　　要：本文运用协整理论,对我国1990-2006年的水稻公共科研投资与技术创新及其生产率增长之间的长短期动态关系进行了检验。结果表明,水稻公共科研投资与技术创新之间存在长期的单向Granger因果关系,而技术创新及公共科研投资与TFP增长之间关系不显著;从短期来看,公共科研投资是水稻品种技术创新的Granger原因,且应用试验经费投入是TFP增长的Granger原因,但技术创新与TFP增长仍不存在显著的Granger因果关系,表明水稻品种创新成果的增加对TFP增长没有显著影响;最后,本文进行了相关解释。Based on the cointegration theory,the dynamic equilibrium relationship between public RD investment,technology innovations and rice productivity growth for China over the period of 1990-2006 in both long and short terms is demonstrated.The results show that there exist long-term unilateral Granger causality relationship in the presence of cointegration between public RD investment and technology innovation,and the relationship either between technology innovation and TFP growth,or between public RD investment and TFP growth is insigniticant.Moreover,Granger causality tests demonstrate that unilateral Granger causality exists between public RD investment and the change of technology innovation,meanwhile between applied research investment and the change of TFP in the short term,however the change of technology innovation is still not the main reason that promotes TFP growth in the short run,and has no effect on the TFP growth.According to empirical results,relevant explanations are provided at last.

关 键 词：协整检验 误差修正模型 公共科研投资 水稻 

分 类 号：F304.4[经济管理—产业经济]