Harvesting the Rain: The Adoption of Environmental Technologies in the Sahel
研究尼日尔农民采用农业技术（解决土地退化）的障碍，发现培训使采用率提高超90个百分点，而现金转移无额外效果，采用后长期农业产出增加、土地流转减少。
Abstract Many agricultural and environmental technologies require upfront investments. This may deter adoption, particularly in settings characterized by information, liquidity, and credit constraints. We test for these barriers to the adoption of an agricultural technique that helps address land degradation in Niger. We find little evidence that liquidity or credit constraints deter adoption: instead, providing farmers with training increases the share of adopters by over 90 percentage points. Conditional or unconditional cash transfers have no additional effect. Adoption increases agricultural output and reduces land turnover in the longer term. In our setting, training provides both specific technical knowledge and addresses behavioral constraints.