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为科学治理塔里木盆地西南缘灌区重度盐渍化,对其一处低洼农田水盐进行监测。结果显示:排除漫灌影响,7月初至11月初,农田地下水埋深呈单峰型,表现为监测前期缓慢上升,8月初达到最大值,后波动性降低;而地下水矿化度一直缓慢降低。0~60cm土壤总盐量表现为单峰型,监测前期缓慢升高,8月达到最大值,后缓慢降低。相关分析表明,整个监测时期,农田地下水埋深、矿化度、0~60cm总盐量均表现为正相关,且随着土壤深度的增加,总盐量与地下水埋深、矿化度的相关程度增大。
In order to scientifically manage the severe salinization in the irrigation area on the southwestern margin of the Tarim Basin, the water and salt in a low-lying farmland were monitored. The results showed that: From the beginning of July to the beginning of November, the groundwater depth of farmland showed a single-peaked pattern, showing the slow increase in the early monitoring period, the maximum in early August and the post-fluctuation decrease; and the salinity of groundwater slowly decreasing. The total salt content in 0-60 cm soil showed a unimodal pattern, slowly increasing in the early monitoring period, reaching the maximum in August and then decreasing slowly. Correlation analysis showed that the groundwater depth, salinity and total salt content in 0-60 cm farmland all showed a positive correlation during the whole monitoring period. With the increase of soil depth, the correlation between total salinity and groundwater depth and salinity Increased degree.