Geographic Heterogeneity and Technology Adoption: Evidence from Brazil
研究巴西地理异质性如何降低免耕种植技术（直接种植系统）的采纳率，因为该技术需要适应当地条件，而地理差异增加了适应成本。
This paper studies the relationship between geographic heterogeneity and technology adoption in the context of the direct planting system (DPS) in Brazil. The DPS is a no-till farming technique that increases productivity and decreases soil degradation. However, it requires adaptation to local conditions to be profitably used. Combining detailed geographic and agricultural data, we show that geographic heterogeneity reduces DPS adoption. This effect is robust to the inclusion of controls and not observed for technologies that do not require local adaptation. These findings are consistent with models in which geographic heterogeneity increases the cost of adapting technologies to local conditions. <i></i>