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首页> 外文期刊>Fortschritte der Physik >Irrigation Management Evaluation And Hydrosalinity Balance Within Kalaat El Andalous Irrigation District, North-East Tunisia
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Irrigation Management Evaluation And Hydrosalinity Balance Within Kalaat El Andalous Irrigation District, North-East Tunisia

机译：Kalaat El Astalous灌区，东北突尼斯灌区灌溉管理评价与水分舒缓平衡

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During 2005-2010 the annual water balance was calculated within Kalaat El Andalous irrigation district and recorded values ranged from -0.77 million m(3) (-257m(3)ha(-1)) to +3.64 million m(3) (+1210m(3)ha(-1)). Monthly analysis of the water balance revealed two distinct phases. Through the first phase (September-May), the water balance showed a highly variable tendency due to erratic rainfall and irrigation water inflows. However, during the second phase (June-August) the water balance remained positive, reflecting farmers' tendency to over-irrigate. Analysis of water productivity confirmed this result mainly during the full irrigation period (June-August). Therefore, the average annual drainage fraction was 26%. The assessment of salt balances during 2005-2010 indicated a general tendency for soil desalination (average annual salt balance: -25 600t (-8.5tha(-1))). Monthly analysis revealed the succession of three distinct phases. The first phase occurring during September-November is characterized mainly by salts leaching and secondly by salts accumulating. The second phase spanning December-April is characterized by salts leaching, while the third phase spanning May-August is characterized by salts accumulating. Thus, 95% of accumulated salts were recorded during May-August and 5% during September-November, while 91% of leached salts were recorded through December-April and 9% during September-November. (c) 2018 John Wiley & Sons, Ltd.
机译：在2005 - 2010年期间，在Kalaat El Astalous灌溉区计算年度水平衡，记录的值范围为-0.77万平方米（3）（-257米（3）公顷（-1））至+ 3.64亿米（3）（+ 1210m（3）ha（-1））。水平的每月分析显示出两个不同的阶段。通过第一阶段（5月至5月），由于不稳定的降雨和灌溉水流量，水平呈现出高度可变的趋势。但是，在第二阶段（八月）（八月）期间，水平仍然是积极的，反映农民过度灌溉的趋势。水生产率分析主要在完整灌溉期（八月）期间确认了这一结果。因此，年平均排水分数为26％。 2005 - 2010年盐余额的评估表明了土壤脱盐的一般趋势（平均年度盐平衡：-25 600T（-8.5吨（-1）））。每月分析显示三个不同阶段的继承。在9月至11月期间发生的第一阶段主要由盐浸出，其次是盐累积的特征。跨越12月4月的第二阶段的特点是盐浸出，而第三阶段遍布5月至8月的特征在于积累的盐。因此，95％的累计盐在5月至8月期间录得累计盐，9月至11月5％，而91％的浸出盐在4月至4月和9月至11月期间遭到9％。 （c）2018 John Wiley＆Sons，Ltd。

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