Structural Changes in U.S. Agricultural Production and Productivity

J. S. James, J. Alston, P. Pardey, M. Andersen
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引用次数: 12

Abstract

The structure of U.S. agricultural production changed dramatically during the 20 Century. Major technological innovations transformed the relationship between agricultural inputs and outputs, and contributed to rapid increases in agricultural productivity. However, evidence is mounting that suggests we have entered a new era, with substantially lower rates of productivity growth. In this article, we examine trends and spatial patterns in agricultural input use, production of outputs, and productivity. We focus on productivity growth over the period 1949–2002, and find a statistically significant slowdown in productivity growth after 1990.
美国农业生产和生产力的结构性变化
美国的农业生产结构在20世纪发生了巨大的变化。重大技术革新改变了农业投入与产出之间的关系,促进了农业生产力的迅速提高。然而,越来越多的证据表明,我们已经进入了一个生产率增长率大幅下降的新时代。在本文中,我们研究了农业投入使用、产出生产和生产力的趋势和空间格局。我们关注1949年至2002年期间的生产率增长,并发现1990年之后生产率增长在统计上显著放缓。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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