Culture‐based fisheries (CBF) are increasingly accepted as strategies for enhancing inland fisheries, especially in tropical Asia. In Sri Lanka, CBF development in irrigation reservoirs has gained momentum due to concerted efforts of government fisheries authorities for inland fisheries enhancement. In the present study, production trends of five irrigation reservoirs of Sri Lanka before and after the introduction of CBF were investigated and apparently optimal CBF yields were not realised. Hence, the stochastic frontier production function (SFPF) was employed to quantify technical efficiencies (TE) of CBF. For each reservoir, annual averages of input data from 2005 to 2018 (14 years) were used in the TE analysis. Hence, total sample size for estimation of SFPF was 70. Although CBF production gradually increased in all five reservoirs from 2005 to 2018, there were substantial variations of total fish production across the reservoirs. The SFPF indicated that CBF production could be further increased through more efficient management of inputs (i.e. number of fishers, mean number of fishing days per year and stocking density).

中文翻译：

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五个热带灌溉水库中以养殖为基础的渔业的生产趋势和技术效率：以斯里兰卡为例

以文化为基础的渔业（CBF）日益被视为增强内陆渔业的战略，特别是在亚洲热带地区。在斯里兰卡，由于政府渔业当局为加强内陆渔业而做出的共同努力，灌溉水库中的CBF发展势头强劲。在本研究中，调查了斯里兰卡的五个灌溉水库在引入煤层气之前和之后的生产趋势，但显然没有实现最佳的煤层气产量。因此，采用随机前沿生产函数（SFPF）量化CBF的技术效率（TE）。对于每个储层，在TE分析中使用了2005年至2018年（14年）的年平均输入数据。因此，用于估计SFPF的总样本量为70。尽管从2005年到2018年，所有五个水库的CBF产量逐渐增加，但整个水库的鱼类总产量却有很大差异。SFPF表示，可以通过更有效地管理投入物（即渔民数量，每年平均捕捞天数和放养密度）来进一步提高CBF的产量。