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首页> 外文期刊>Acta Horticulturae >Irrigation performance indicators for best irrigation management in an irrigation district.
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Irrigation performance indicators for best irrigation management in an irrigation district.

机译：灌溉性能指标，可在灌区实现最佳灌溉管理。

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摘要

Irrigation water management in the Genil-Cabra irrigation district, located in the province of Cordoba, southern Spain, was studied using three irrigation performance indicators: relative irrigation supply (RIS); relative water supply (RWS) and relative rainfall supply (RRS). All indicators have been calculated as in a global way as grouping data according to crop type, irrigation method and soil texture. All information of agronomic and hydraulic variables was incorporated in a Geographic Information System (GIS) to ease its management. Results show that applied irrigations are deficit irrigations because RIS values are relatively low. However, RWS values are greater and evaporative demand may be satisfied along crop development cycle. RRS indicator varies less than the other two and, together with RWS, permits to know the evapotranspiration fraction covers by rain water. Irrigation water management in four crops (olive, cotton, sunflower and maize) is considered to be adequate. In the case of sugar beet and asparagus, the deficit is larger. Wheat and garlic are the two crops that show inefficient management due to an excess supply of water. RWS and RIS values are higher for sprinkler irrigation than for drip irrigation. Soil type has little influence on irrigation management. In general, more water is applied to crops planted in sandy loam soils than in silty clay loam soils. The mean values of performance indicators we have calculated are very useful to know farmer's behaviour and the general trend, although the used sample is not significant to characterize the global irrigation district.
机译：使用三个灌溉绩效指标对位于西班牙南部科尔多瓦省的Genil-Cabra灌溉区的灌溉水管理进行了研究：相对供水（RWS）和相对降雨量（RRS）。所有指标均根据作物类型，灌溉方式和土壤质地以全局方式作为分组数据进行计算。农学和水力变量的所有信息都整合到地理信息系统（GIS）中，以简化管理。结果表明，由于RIS值相对较低，因此应用灌溉属于亏缺灌溉。但是，RWS值较大，并且在作物生长周期中可能满足蒸发需求。 RRS指标的变化小于其他两个指标，并且与RWS一起允许知道雨水的蒸散量覆盖率。四种作物（橄榄，棉花，向日葵和玉米）的灌溉水管理被认为是适当的。在甜菜和芦笋的情况下，赤字更大。小麦和大蒜是由于水供应过多而导致管理效率低下的两种作物。喷灌的RWS和RIS值高于滴灌的RWS和RIS值。土壤类型对灌溉管理影响很小。通常，与砂质壤土相比，在砂壤土上种植的作物需要更多的水。尽管所使用的样本对于表征全球灌溉区并不重要，但我们计算出的绩效指标的平均值对于了解农民的行为和总体趋势非常有用。

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