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采用实际田间取样、土样实验室分析以及统计分析等方法,对玛纳斯河中游耕地不同灌溉方式下棉田土壤主要盐离子含量的变化进行定量分析。研究结果表明:漫灌方式下土壤中Cl-/SO2-4值在各土层均有上升趋势,而滴灌方式下Cl-/SO2-4值在各土层表现出先上升后下降的趋势,在6月有一个高点,但随后下降到与4月相似的水平,表明漫灌方式比滴灌方式更易使得土壤的盐渍化类型向氯离子类型转变。研究结论对减缓土壤盐渍化、指导灌溉施肥管理以及耕地的可持续利用均有积极意义。
The actual field sampling, soil sample laboratory analysis and statistical analysis were used to quantitatively analyze the changes of main salt ions in soils under different irrigation methods in the middle Manas River. The results show that the Cl- / SO2-4 values in soils under diffusive irrigation have an increasing trend in all soils, whereas the values of Cl- / SO2-4 in drip irrigation show a trend of first increasing and then decreasing, There was a high in the month, but then dropped to similar levels in April, indicating that flooding was more likely to change the salinization type of the soil to the chloride type than drip irrigation. The conclusions of the study are of great significance to slowing soil salinization, guiding the management of irrigation and fertilization and the sustainable utilization of cultivated land.