国际货币基金组织：撒哈拉以南非洲的作物生产力：研究与开发的作用（英文版）

This paper provides new cross-country evidence that greater investment in agricultural R&Dsignificantly mitigates the adverse effects of climate variability on crop yields in sub-Saharan Africa. Despitethis critical role, only a handful of countries have invested at levels sufficient to reach the thresholds whereR&D delivers effective risk adaptation. Our analysis indicates that closing this gap would require an additionalUS$1_3 bilion in annual aqricultural research investment acros