河南大学明伦校区盐碱土的特性及其改良  

Characteristics and Amelioration of Saline-Alkali Soils in Minglun Campus of Henan University

作　　者：马建华[1] 

机构地区：[1]河南大学黄河文明与可持续发展研究中心,河南开封475004

出　　处：《河南大学学报（自然科学版）》2007年第3期271-275,共5页Journal of Henan University:Natural Science

基　　金：河南大学专项基金资助项目(XKZ02001);教育部人文社会科学重点研究基地河南大学黄河文明与可持续发展研究中心项目(YRCSD-A-02)

摘　　要：在河南大学明伦校区采集8个地下水样品,21个土壤样品.按照国家标准方法测定了地下水和土壤水溶液的K+,Na+,Ca2+,Mg2+,CO32-,HCO3-,Cl-和SO42-含量及pH值,地下水的矿化度,土壤的全盐量.结果发现,地下水pH值均在8.14以上,平均矿化度为1.80 g.L-1,属于碳酸氢钠-氯化钙型地下水;土壤平均含盐量0.17%,属于碳酸氢钠-氯化钙型盐土,轻度盐土的样点占总样点数的61.90%,中度盐土的样点占总样点数的28.57%;土壤呈碱性反应,平均pH 8.30,盐碱土危害是校园绿化的主要限制因素.最后提出了以工程措施为先导、以培肥土壤和生物措施为重点,辅以化学措施的盐碱土改良建议.Eight ground water samples and 21 soil samples were collected in Minglun Campus of Henan University. The concentrations of K^＋, Na^＋ , Ca^2＋, Mg^2＋ , CO3^2-, HCO3^-, Cl^-, SO4^2- and pH values in ground water and soil samples, the mineralized degrees of ground water , and the contents of the total water soluble salts in soils were determined according to the standard methods of China. The results are shown as follows： 1） The values of pH in all ground water samples are higher than 8.14, the average mineralized degree of ground water is 1.80 g·L^-1. The type of the ground water belongs to NaHCO3-CaCl2. 2） The average content of the total water soluble salts in soils is 0.17%, the slight salinization sites make up 61. 90 per cent of the total sampling sites, and the medium salinization sites make up 28.57 per cent of the total sampling sites. The type of the soil belongs to NaHCO3-CaCl2, the same as the type of the ground water. 3） The soils are alkaline because the average soil pH is 8.30. The main problem for campus virescence is the harm from the saline-alkali soils in Minglun Campus of Henan University. At last, some suggeztions were put forward for ameliorating the saline-alkali soils by engineering, pedology, biology and chemistry.

关 键 词：河南大学明伦校区 校园土壤 盐碱土 土壤改良 

分 类 号：S156.44[农业科学—土壤学]