Cape Verde, which has agricultural land that is mainly rainfed, will be severely affected by climate change due to increased drought conditions. Scarce water availability makes this country highly dependent on imports for its food supply, resulting in more than 80% food importation. Improving water use efficiency, implementing precision irrigation could help achieve sustainable use of water resources. Cereal production reusing treated water could contribute to strengthening resilience and adaptation to climate change in Cape Verde. Our pilot project demonstrates that the safe and profitable reuse of water produced by Cape Verde’s water treatment plants is possible by avoiding water and plant contact using Subsurface Drip Irrigation (SDI), obtaining food yields between 10,000 and 7000 kg of cob/ha, with a water consumption of about 300 L/kg Dry-Matter and a Water-Use-Efficiency of about 3 g/L. These studies also showed that it is necessary to provide training to farmers and to conduct further studies to help solve present challenges. This project identif installation failures as water shortages can compromise farmers’ profitability. To guarantee the sustainability of water reuse, it is also necessary to consider economic and social factors, including that all water that is not reused is poured, increasing environmental and sanitary risk and decreasing the possibility of recovering water treatment costs.

中文翻译：

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佛得角（西非）成功的水再利用试点项目：在气候变化情景中增加粮食产量的可持续方式

佛得角的农业土地主要是雨养，由于干旱条件的加剧，气候变化将严重影响佛得角。缺水使该国高度依赖进口来供应食品，导致80％以上的食品进口。提高用水效率，实施精确灌溉可以帮助实现水资源的可持续利用。再利用经过处理的水的谷物生产可以有助于增强佛得角的复原力并适应气候变化。我们的试点项目表明，通过使用地下滴灌（SDI）避免水和工厂的接触，并获得10,000至7,000 kg玉米芯/公顷的粮食产量，佛得角水处理厂生产的水可以安全，有利地再利用，耗水量约为300 L / kg干物质，耗水量约为3 g / L。这些研究还表明，有必要向农民提供培训并开展进一步研究以帮助解决当前的挑战。该项目将安装失败归因于水资源短缺会损害农民的盈利能力。为了保证水回用的可持续性，还必须考虑经济和社会因素，包括所有未回用的水都被倒入，这增加了环境和卫生风险，并降低了收回水处理成本的可能性。该项目将安装失败归因于水资源短缺会损害农民的盈利能力。为了保证水回用的可持续性，还必须考虑经济和社会因素，包括所有未回用的水都被倒入，这增加了环境和卫生风险，并降低了收回水处理成本的可能性。该项目将安装失败归因于水资源短缺会损害农民的盈利能力。为了保证水回用的可持续性，还必须考虑经济和社会因素，包括所有未回用的水都被倒入，这增加了环境和卫生风险，并降低了收回水处理成本的可能性。