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首页> 外文期刊>Agricultural Water Management >Test of AquaCrop model in simulating biomass and yield of water deficient and irrigated barley (Hordeum vulgare).
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Test of AquaCrop model in simulating biomass and yield of water deficient and irrigated barley (Hordeum vulgare).

机译：模拟缺水和灌溉大麦（ Hordeum vulgare ）的生物量和产量的AquaCrop模型测试。

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With the current water shortage in East Africa improving crop water use is vital especially in the arid and semi-arid regions of Ethiopia. To understand the response of barley to water and to simulate the biomass and grain yield of barley under various water inputs and planting dates, we tested the FAO AquaCrop model versions 3.0 using independent data sets during the cropping seasons of 2006, 2008 and 2009 at Mekelle site in northern Ethiopia. We found that the model is valid to simulate the barley biomass and grain yield under various planting dates in the study site. AquaCrop model can be used in the evaluation of optimal planting time. Out of the tested planting dates, planting on July 4 (early sowing) was found to maximize barley biomass, grain and water use efficiency. The model can also be used in the evaluation of irrigation strategies. Barley showed slightly lower performance under mild water stress condition compared to full irrigation condition. However, the model has indicated the possibility of obtaining more biomass and grain yield from a relatively larger barley field under (deficit irrigation) mild stress condition.
机译：由于目前东非缺水，改善作物用水至关重要，尤其是在埃塞俄比亚的干旱和半干旱地区。为了了解大麦对水的响应并模拟大麦在不同水输入量和播种日期下的生物量和谷物产量，我们使用独立数据集在2006年，2008年和2009年麦凯尔（Mekelle）的种植季节测试了FAO AquaCrop模型版本3.0在埃塞俄比亚北部。我们发现该模型可有效模拟研究地点不同播种日期下的大麦生物量和谷物产量。 AquaCrop模型可用于评估最佳播种时间。在测试的播种日期之外，发现7月4日（早播）播种可使大麦生物量，谷物和水分利用效率最大化。该模型还可用于评估灌溉策略。与完全灌溉条件相比，大麦在温和的水分胁迫条件下表现出略低的性能。但是，该模型表明在（干旱灌溉）温和胁迫条件下，可以从相对较大的大麦田中获得更多的生物量和谷物产量。

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