将基因技术和金融技术结合起来,提高非洲小农的抗灾能力和生产率

Stephen R Boucher, Michael R Carter, Jon Einar Flatnes, Travis J Lybbert, Jonathan G Malacarne, Paswel P Mareyna, Laura A Paul
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摘要

本文利用一项横跨两个非洲国家的多年期空间分散随机对照试验,探讨了基因和金融技术的互补组合能否提高小规模农户的抗灾能力和生产率。分析表明,中等程度的干旱和更严重的减产都会削弱对照组家庭的抗灾能力,而且这些冲击会产生长期影响,因为农民在受到冲击后会减少投资和生产。严重的产量冲击还会加剧饥饿和粮食不安全。基因技术--耐旱种子--为抵御季节中期的干旱提供了具有经济意义的保护,并缓解了对照组农业生产率的长期下降。金融技术--基于卫星的指数保险--抵消了耐旱种子无法减轻的严重产量损失的长期后果。最后,分析表明,治疗组的农民在经历了冲击并亲眼目睹了这些技术的应用后,其农业投资的增幅超过了冲击前的水平,我们将这种效应称为 "恢复力红利"。不幸的是,这种明显的经验学习是双向的。没有体验到风险管理技术功效的农民则放弃了使用这些技术。因此,我们的研究结果展示了遗传和金融风险缓解技术如何为农民提供更全面的保护,同时也展示了如何引导农民持续吸收介于经验和可信度之间的技术所面临的挑战,因为这些技术并不经常显示出其效益。
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Bundling Genetic and Financial Technologies for More Resilient and Productive Small-Scale Farmers in Africa
Using a multi-year, spatially-diversified randomised controlled trial spanning two African countries, this paper explores whether a complementary bundle of genetic and financial technologies can boost the resilience and productivity of small-scale farmers. The analysis shows that both moderate droughts and more severe yield losses undermine the resilience of control group households, and that these shocks have long-lasting effects as farmers invest and produce less following shocks. Severe yield shocks also increase hunger and food insecurity. The genetic technology—drought tolerant seeds—provides economically significant protection against mid-season drought and mitigates the long-term drop in farm productivity seen in the control group. The financial technology—satellite-based index insurance—offsets the long-term consequences of severe yield losses that are not mitigated by the drought tolerant seeds. Finally, the analysis shows that treatment group farmers who experienced shocks and saw the technologies in action subsequently increased their agricultural investment beyond pre-shock levels, an effect we call the resilience dividend. Unfortunately, this apparent experiential learning cuts both ways. Farmers who did not experience the efficacy of the risk management technologies backed away from using them. Our findings thus showcase how genetic and financial risk mitigating technologies can offer farmers more complete protection, as well as the challenge of inducing sustained uptake of technologies that are midway between experience and credence goods and only infrequently reveal their benefits.
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