Raised beds (RB) are hailed as means to mitigate the problem of excessive irrigation. However, their adoption and impacts in Egypt are not well-documented. This paper is based on survey data collected from a sample of 691 wheat fields drawn from three major wheat-producing provinces of Egypt. Using area-weights for upward aggregation, we estimated that 19.3% of total wheat area in the three provinces is cultivated with raised beds. We applied the endogenous switching regression model to analyze the socioeconomic, biophysical, and environmental impacts of RB. Model results showed that the adoption of RB led to a 937 kg/ha (12.79%) increase in yield, a US$77.60/ha (9.47%) increase in gross margins, an 824.63 m³/ha (15.05%) reduction in irrigation water application, 16.7% reduction in seeding rate, 5.56% increase in water productivity, and an 11.80% reduction in downside yield risk. Adoption of RB didn’t have significant effect on soil salinity and quantities of fertilizer and labor inputs. These results show that RB can provide panacea to several interrelated socioeconomic, biophysical, and environmental problems associated with irrigation. The policy implication of our findings is that Egypt and other similar countries can benefit from embracing RB as part of the technology packages promoted by their national agricultural extension systems. The benefits to these countries will increase if they invest more on research for adapting and perfecting the RB technology including its mechanization and its efficacy in soil salinity management.

高架床（RB）被称为减轻过度灌溉问题的手段。但是，这些文件在埃及的采用和影响尚未有充分的文献记载。本文基于从埃及三个主要产麦省份抽取的691个麦田样本中收集的调查数据。使用面积权重进行向上聚合，我们估计这三个省的小麦总面积的19.3％是用高架床耕种的。我们使用内生转换回归模型来分析RB的社会经济，生物物理和环境影响。模型结果显示，采用RB可使单产增加937公斤/公顷（12.79％），毛利润增加77.60美元/公顷（9.47％），达824.63 m ³/公顷（15.05％）的灌溉用水量，16.7％的播种量减少，5.56％的水生产率增加以及11/80％的下降产量风险降低。RB的使用对土壤盐分和肥料用量及劳动力投入没有显着影响。这些结果表明，RB可以为与灌溉相关的一些相互关联的社会经济，生物物理和环境问题提供灵丹妙药。我们的发现的政策含义是，埃及和其他类似国家可以从接受RB中受益，因为RB是其国家农业推广体系推广的技术包的一部分。如果这些国家加大对适应和完善RB技术的研究的投入，包括其机械化及其在土壤盐分管理中的功效，则将给这些国家带来更多的收益。