N2 - Koyra(库尔纳区)是孟加拉国的沿海Upazila地区，非常容易受到盐度入侵。Upazila的地表和浅管井的水是天然含盐的。在考虑区域的地下管井水的质量很难为Koyra的不同联盟提供。Koyra的Dakshin Bedkashi联盟很容易受到盐的影响。因此，决定将Dakshin Bedkashi联盟的地下水化学合法化，以确定地下水是否适合饮用和灌溉。2016年12月，我们从深层含水层(550至700英尺深)收集了30个空间分散的水样，并对其物理化学性质进行了分析。将结果与世界卫生组织、美国环保局和BBS饮用水质量标准以及粮农组织灌溉标准进行了比较。pH值在6.73 ~ 8.33之间，水质符合世界卫生组织饮用水标准。TDS变化范围较长(230.5 ~ 2052.0 ppm)，平均为841.23 ppm，其中33%的水源超过BBS标准值。盐度平均值为0.65(±0.43)ppt, EC为1400.9(±904.18)µS cm-1。 The loads of key ions were ranked as Na+> Ca2+> Mg2+> K+ and HCO3-> Cl-> SO42-> NO3-> PO4-. The Piper diagram demonstrated that the existing hydro-chemical facies of groundwater were Na+-Cl--HCO3- and Na+-Ca2+-HCO3- type. The Gibbs diagram illustrated that the chemical arrangement of groundwater is mainly misrepresented by rock weathering. Silicate weathering was the profuse process along study area. The Wilcox diagram proved that the greater water sources were allowable to suspicious for irrigation. The core component analysis ensured that rock suspension and sea water intrusion was the primary source of ions in groundwater. The controlling factors of groundwater chemistry were typically related to geologic factors, while the anthropogenic factors have not any momentous effects. JF - Current World Environment JA - VL - 79 IS - 81 UR - www.a-i-l-s-a.com/article/1301/ SP - EP - PB - M3 - ER -