Is technology change good for cotton farmers? A local-economy analysis from the Tanzania Lake Zone
研究了坦桑尼亚湖区小规模棉农采用增产技术对当地经济的影响，发现需求限制使收益流向加工商，而轧棉产能过剩则相反，提出增产需配合市场保障才能改善农户福利。
Technological change holds the potential to increase crop output as well as incomes of farmers and the communities in which they live. We carry out a local economy-wide impact evaluation of productivity-enhancing technological change amongst small-scale cotton producers in Tanzania's Lake Zone. Our analysis reveals that demand constraints shift benefits from farmers to downstream processors, while limiting positive spillovers within local economies. Excess cotton gin capacity does the opposite. Interventions to ensure markets for increased output should complement strategies to raise productivity if a project's goal is to improve welfare in farm households and the communities in which they live.