Crop‐Level Supply Response by Agro‐Climatic Region in Ethiopia
利用埃塞俄比亚农户调查数据，估计二次受限利润函数，评估小农对价格激励的供给反应，发现商业性较强的中南部地区农户反应显著，而北部地区反应弱，非价格因素（降雨、市场准入）比价格更重要。
Using farm‐level survey data from Ethiopia, this paper estimates a quadratic restricted profit function to assess the supply response of smallholder farmers. All major crops are identified in the analysis and variations in agro‐climatic and farming systems are accounted for. Peasant farmers, at least in the more commercial Central and Southern zones, do respond positively and significantly to price incentives. Farmers in the Northern zone are least commercial and least responsive to prices, and in fact the model based on profit maximisation does not adequately capture their behaviour. In general, non‐price factors, especially rainfall and market access, are more important than prices in affecting poduction, and which factors are most important varies depending on the crop and region in question. We conclude with suggestions regarding which crops appear most suitable to each agro‐climatic region, and identify the most relevant policy interventions in each case.