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中文摘要：
本文基于政府农业公共科研投资内生化的理论分析，研究了公共农业科研投资的决定，并以我国31个省（市、区）1987—2009年的数据进行了经验检验。结果表明，以农业份额表示的结构变量是政府农业公共科研投资的负向决定因素，粮食作物播种面积正向影响科研投入，非粮食作物播种面积负向影响科研投入，农业人口对科研投入的影响为负，公共农业科研投资是一种联合产品，并不遵循公共物品收入中性理论，技术溢出对农业科研的影响为正。另外，农业生产条件、农民受教育程度对政府农业科研投入产生积极作用。
英文摘要：
This paper study the decision of the R＆D investment for government in agriculture under the endogenous framework, and test it with the data from China＇s 31 provinces during the year 1978 - 2009. Conclusions are as follows： the agriculture＇s share in the GDP is the main factor which decide the R＆D Investment for government; the improvement of the local revenue can increase the investment; the increase of food cropland induce the increase of the investment and the non-food cropland induce the decrease of the investment ; the farmer population is correlation with the investment negatively ; conditions for agriculture production, education degree by farmers and the effect of spill-out of the technology are correlation with the investment positively.
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