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市场准入与质量升级:来自四项实地实验的证据

Market Access and Quality Upgrading: Evidence from Four Field Experiments
American Economic Review · 2022 · Tessa Bold、Selene Ghisolfi、F. Nsonzi、Jakob Svensson

中文摘要

许多发展中国家的小农农业具有生产率低、产出质量低的特点。低质量限制了农民能够获得的销售价格及其潜在收入。我们在乌干达玉米种植户中开展了一系列实验,以揭示质量升级面临的障碍并研究其潜力。我们发现,质量的因果回报为零。为农民提供进入对质量支付市场溢价的市场的机会,提高了农场生产率和农业收入。我们的研究结果揭示了需求侧约束在限制农村收入和生产率增长方面的重要性。

Abstract

Smallholder farming in many developing countries is characterized by low productivity and low-quality output. Low quality limits the price farmers can command and their potential income. We conduct a series of experiments among maize farmers in Uganda to shed light on the barriers to quality upgrading and to study its potential. We find that the causal return to quality is zero. Providing access to a market where quality is paid a market premium led to an increase in farm productivity and income from farming. Our findings reveal the importance of demand-side constraints in limiting rural income and productivity growth. (JEL C93, L14, L15, L22, O13, Q12, Q13)
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