江苏省农业投入产出实证分析

[目的]为探索江苏农业投入与产出的相互关系，以及各类投入要素对农业产出的影响程度。[方法]运用因子分析法和回归分析法对1990～2012年间江苏省农业生产投入与产出情况进行定量化分析和评价。[结果]因子分析结果表明，90年代以来江苏农业投入产出综合效率呈持续上升趋势，提取出农林牧渔业投入产出、种植业投入产出和粮食生产投入产出3个主因子，其得分分别反映了20多年江苏农林牧渔业、种植业和粮食生产投入产出效率的变化过程。回归分析结果表明，对农业产出3项指标有显著影响的农业投入要素各不相同，并通过回归参数估计计算出各农业投入要素对3个产出指标的影响程度。[结论]该研究为江苏农业的投入结构的决策提供理论依据。

Agricultural Input and Output in Jiangsu Province with Case Analysis

[Objective] The aim was to explore interrelationship between agricultural input and output in Jiangsu and the influence degrees of input factors on agricultur-al output. [Method] Quantitative analysis and evaluation were made on agricultural input and output in Jiangsu during 1990-2012 as per factor analysis and regression analysis. [Result] The result of factor analysis showed that since the 1990s, the comprehensive efficiency of agricultural input/output in Jiangsu was growing and in-put/output of agriculture, forestry, animal husbandry and fishery, crop farming, and of food production were extracted, whose scores reflect the changes of input/output ef-ficiencies in terms of agriculture, forestry, animal husbandry, fishery, crop farming and food production in the two decades. The results of regression analysis indicated that the effects of the three indices on agricultural output tended to be volatile and the influence degrees were concluded also by regression parameters. [Conclusion] The research provides theoretical references for agricultural input/output structure in Jiangsu Province.