柳州市郊县灌溉水养分元素含量

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。

The Nutrient Element Content of Irrigation Water in Suburban Counties of Liuzhou

This paper deals with the study on the content of 9 nutrient elements and the pH value of the irrigation water in Liujiang, Liucheng and Laibin counties around Liuzhou, Guangxi. The nitrogen (N) content ranges from 0.52 to 0.87 mg L-1, the phosphorus (P) from 0.003~0.024 mg L-1, the potassium (K) 0.81~1.19 mgL-1, the sodium (Na) 0.99~1.52 mg L-1, the calcium (Ca) 29.44~73.28 mg L-1, the magnesium (Mg) 5.14~17.20 mg L-1, the sulphur (S) 1.02 ~ 1.60 mg L-1, the chloride (Cl) 2.68-7.40 mg L-1, and the fluoride (F) 0.15~0.24 mg L-1. The pH value is between 8.33 and 8.44. Among these elements, the S content has rather distinct seasonal variations, while the concentration of K, Na, Mg, S and Cl increases with the length of water flow along the drainage channel.