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本文研究了柳州市郊柳江、柳城和来宾三县的灌溉水养分元素含量和pH值。含氮0.52~0.87mg/L,磷0.003~0.024mg/L,钾0.81~1.19mg/L,钠0.99~1.52mg/L,钙29.44~73.28mg/L,镁5.14~17.20mg/L,硫1.02~1.60mg/L,氯2.68~7.40mg/L和氟0.15~0.24mg/L。pH8.33~8.44。在9种元素中,硫随季节变化比较明显。钾、钠、镁和硫、氯随流程增长含量增加。