Abstract Despite the growing popularity of culture-based fisheries (CBFs) associated with village irrigation systems (VISs) in Sri Lanka, there is less knowledge about factors that influence productivity levels. CBFs compete with rice for access to water in the VIS, so maximizing the efficiency of CBFs is essential to ensure that the limited water resources are used most effectively. To address this, primary data from 325 fish farming groups were used to estimate a stochastic translog production frontier. Technical efficiency in these irrigation systems was found to be generally low, and substantially lower than that of other aquaculture production systems in other Asian countries. This suggests that production can be increased substantially with better management using existing technology and resources. Removing subsidies, improving consultation with extension officials and improving water user rights – in particular, the introduction of a transferable community quota system – were found to be key means for improving efficiency.

中文翻译：

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斯里兰卡乡村灌溉系统中养殖渔业生产的效率

摘要 尽管在斯里兰卡与村庄灌溉系统 (VISs) 相关的养殖渔业 (CBFs) 越来越受欢迎，但对影响生产力水平的因素知之甚少。CBF 与水稻争夺 VIS 中的水资源，因此最大限度地提高 CBF 的效率对于确保最有效地利用有限的水资源至关重要。为了解决这个问题，来自 325 个养鱼组的原始数据被用来估计一个随机 translog 生产前沿。发现这些灌溉系统的技术效率普遍较低，大大低于其他亚洲国家的其他水产养殖生产系统。这表明可以通过使用现有技术和资源进行更好的管理来大幅提高产量。取消补贴，