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首页> 外文期刊>Agrekon >SIMULATION OF EFFICIENCY IMPACT OF DRAINAGE WATER RE-USE: CASE OF SMALL-SCALE VEGETABLE GROWERS IN NORTH WEST PROVINCE, SOUTH AFRICA
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SIMULATION OF EFFICIENCY IMPACT OF DRAINAGE WATER RE-USE: CASE OF SMALL-SCALE VEGETABLE GROWERS IN NORTH WEST PROVINCE, SOUTH AFRICA

机译：污水回用的效率影响模拟：以南非西北部的小规模蔬菜种植户为例

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摘要

This paper focuses on estimating the effect of drainage water reuse on the technical efficiency of small-scale vegetable growers in South Africa applying a data envelopment analysis (DEA). In the semi-arid North West Province of South Africa water scarcity and the soon to be implemented water charges have urged farmers in small-scale irrigation schemes to evaluate the efficiency of their water use. Data on 60 farmers were used to estimate the level of technical efficiency and the effect that drainagewater re-use could have on efficiency levels. This effect of water reuse was simulated by a 5, 10, 15 and 20 per cent reduction in water use at farm level. A Malmquist productivity index was calculated to evaluate the effect of these reductions. The main finding was that under current farming conditions many farmers operated at sub-optimal levels of technical efficiency. While a reduction in water use evidently increased factor productivity for most farms, the effect clearly varied strongly between farms. This confirms the need to take a systems approach for this type of evaluations.
机译：本文着眼于应用数据包络分析（DEA）估算排水中水回用对南非小规模蔬菜种植者技术效率的影响。在南非半干旱的西北省，水资源短缺和即将实施的水费促使小规模灌溉计划的农民评估其用水效率。利用有关60个农民的数据来估算技术效率水平以及废水回用可能对效率水平产生的影响。通过在农场一级将用水量减少5％，10％，15％和20％，可以模拟出水回用的这种效果。计算了Malmquist生产率指数以评估这些减少的影响。主要发现是，在当前的农业条件下，许多农民的技术效率处于次优水平。虽然用水量的减少明显提高了大多数农场的要素生产率，但效果显然在各个农场之间差异很大。这证实了对于这种类型的评估需要采取系统的方法。

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