The Diffusion of Process Innovation: The Case of Drip Irrigation in California
The Diffusion of Process Innovation: The Case of Drip Irrigation in California
复制标题
工艺创新的传播：加州滴灌案例
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
D. Zilberman
中科院分区：
文献类型：
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作者：
Rebecca Taylor;D. Zilberman
本文使用滴灌来说明工艺创新在其扩散过程中的演变--随着时间的推移，为了跨越应用和地点，工艺创新经历了几波改进和与其他生产实践的共同演变。首先，我们整合了多个数据源，以追溯加州点滴的丰富历史。我们发现，drop的演变与1）阈值模型（threshold model）和实物期权价值模型（real option value model）是一致的，阈值模型强调首先在最有价值的地方采用技术的趋势，实物期权价值模型表明危机情况会引发重大转变。我们强调了私营和公共部门在适应当地需求的过程创新中的作用，并表明了在评估技术影响时进行历史分析和透视的必要性。其次，我们实证研究滴灌在加州的生产力的影响，重点是在作物产量和农场收入的变化。我们估计滴灌的产量效应范围为16- 48%，具体取决于作物和地点，每年增加2.6-7.4%的农场收入。总的来说，我们表明，滴灌的扩散是渐进的，合作推广是必不可少的，加州农业的收益是巨大的。
This article uses drip irrigation to illustrate the evolution of process innovations during their diffusion—undergoing several waves of improvements and coevolution with other production practices in order to move across applications and locations over time. First we integrate multiple data sources to trace the rich history of drip in California. We find that drip’s evolution has been consistent with 1) the threshold model, which emphasizes the tendency to first adopt a technology at locations where it is most valuable and 2) the real option value model, which suggests that crisis situations trigger major transitions. We highlight the role of the private and public sector in adapting process innovations to local needs and show the necessity of historical analysis and perspective in assessing a technology’s impacts. Second, we empirically investigate the productivity impacts of drip irrigation in California, focusing on changes in crop yields and farm income. We estimate a yield effect of drip ranging from 16-48%, depending on the crop and location, and an increase in farm income between 2.6-7.4% annually. On whole, we show that the diffusion of drip was gradual, Cooperative Extension was essential, and the gains for California agriculture were substantial.
影响因子：
5.6
作者：
Foster AD;Rosenzweig MR
通讯作者：
Rosenzweig MR