论文标题

获得信贷对微型企业生产率的影响:将技术变化与技术效率的变化分开

The Effects of Access to Credit on Productivity Among Microenterprises: Separating Technological Changes from Changes in Technical Efficiency

论文作者

Jimi, Nusrat Abedin, Nikolov, Plamen, Malek, Mohammad Abdul, Kumbhakar, Subal

论文摘要

提高农场微型企业的生产率很重要,尤其是在市场不完美且资源稀缺的低收入国家中。放松的信用限制可以提高农民的生产率。使用涉及孟加拉国微型企业的现场实验,我们估计获得信贷对水稻农民整体生产率的影响,并将全面效应分解为技术变革(Frontier Shift)和技术效率变化。我们发现,相对于每个小数的基线水稻产量,获得信用的访问结果平均而言,收益率大约增加了14%,使所有其他投入量保持恒定。在将总效应分解为前沿转移和提高效率之后,我们发现,产量增加的11%来自技术的变化或边境转移,而其余3%则归因于技术效率的提高。现代杂交大米品种的效率提高较高,而传统水稻品种几乎为零。在治疗组中,与仅耕种自己土地的农民相比,纯租户和混合租户农户的影响更大。

Improving productivity among farm microenterprises is important, especially in low-income countries where market imperfections are pervasive and resources are scarce. Relaxing credit constraints can increase the productivity of farmers. Using a field experiment involving microenterprises in Bangladesh, we estimate the impact of access to credit on the overall productivity of rice farmers, and disentangle the total effect into technological change (frontier shift) and technical efficiency changes. We find that relative to the baseline rice output per decimal, access to credit results in, on average, approximately a 14 percent increase in yield, holding all other inputs constant. After decomposing the total effect into the frontier shift and efficiency improvement, we find that, on average, around 11 percent of the increase in output comes from changes in technology, or frontier shift, while the remaining 3 percent is attributed to improvements in technical efficiency. The efficiency gain is higher for modern hybrid rice varieties, and almost zero for traditional rice varieties. Within the treatment group, the effect is greater among pure tenant and mixed-tenant farm households compared with farmers that only cultivate their own land.

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