为了促进暗管排水技术在兵团南疆垦区盐渍化土壤改良中的应用，以新疆生产建设兵团第一师二团为研究区域，选择典型地块，通过暗管排水试验，研究了暗管不同管径（50 mm、60 mm）和不同间距（6、8、10 m）对农田排水水质的影响。结果表明：与灌溉水相比，暗管排水的矿化度、电导率显著高于灌溉水。各处理6月、8月、10月三次暗管排水的平均矿化度分别是6.427、7.382、6.781 g/L，为灌溉水的8.33、8.58倍和10.76倍；电导率分别是4.833、6.222、5.379 mS/cm，为灌溉水的7.92、10.55倍和10.98倍。暗管管径和间距对暗管排水的矿化度、电导率有显著的影响。间距相同的条件下，暗管管径越大，排水的矿化度、电导率越大；管径相同的条件下，暗管间距越大，排水的矿化度，电导率也越大。3次灌水时，暗管管径60 mm、间距10 m处理的平均矿化度和电导率分别为8.562、9.070、8.807 g/L与6.670、7.910、7.364 mS/cm。
Abstract
In order to promote the dark tube drainage technology in the application of salinization area of southern Xinjiang crop land, given a typical land of the second regiment area of Shajingzi of Southern Xinjiang Reclamation Area as an example, this paper studies the effect in different pale diameters and gaps of underground pales on the quality of drain by experiment. It turns out that, compared with irrigation water, the drain of underground pales is evidently high in conductivity and salinity. The average salinity of processed underground piles water in different months-June, August and October-are 6.427, 7.382 and 6.781 g/L respectively, which are 8.33,8.58 and 10.76 times as the irrigation water does during the same months. And the average conductivity are 4.833, 6.222 and 5.379 mS/cm, which are 7.92, 10.55, and 10.98 times as the irrigation water does during the same months. Besides, the underground pipes diameters have an apparent effect on the salinity and conductivity of the drain: if on the same gaps condition，the wider pipes are，the higher conductivity and salinity will be. If on the same pipe diameter condition，the bigger the gaps are, the higher conductivity and salinity will be. The drain's mean conductivity and salinity processed by pipes diameter of 60 mm and pipes gap of 6m are 8.562, 9.070,8.807 g/L and 6.670,7.910,7.364 mS/cm, respectively.
关键词
南疆 /
暗管排水 /
矿化度 /
电导率
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Key words
South Xinjiang /
pipe drainage /
salinity /
conductivity
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