广东地热水资源农用适宜性评价  

Evaluation of Agricultural Suitability on Geothermal Water in Guangdong

作　　者：刘忠珍[1] 许桂芝[1] 欧俊[1] 黄玉芬[1] 刘辉[1] 杨少海[1] 

机构地区：[1]广东省农业科学院土壤肥料研究所,广东省养分资源循环利用与耕地保育重点实验室,广州510640

出　　处：《自然资源学报》2011年第1期128-134,共7页Journal of Natural Resources

基　　金：国家自然科学基金资助项目(40901113);广东省自然科学基金资助项目(8451064001001121);广东省科技计划项目(2007A20300005-2)

摘　　要：广东是我国地热资源最为丰富的省区之一。论文通过从相关文献查询和采样的方法,共收集到广东10个不同区域的15个不同地热水的理化性质指标。重点对其pH值、离子含量、矿化度、氟含量、重金属含量、砷含量等进行分析,并结合农田灌溉水质标准对其尾水的农用适宜性进行了初评,结果表明:氟含量是限制其农用性最主要的限制因子,其次是氯化物,矿化度是第三限制因子。广东大部分地区地热水不适宜直接农用,适当稀释后可用作农田灌溉水。为了更好地补给地热水,减缓地热水资源衰减趋势,建议建立科学合理的回灌系统。Guangdong is one of the provinces possessing the richest geothermal resources in China. The properties of 15 different hot springs water come from 10 different regions of Guangdong were collected from relevant literatures or measurement in lab. We have analyzed the pH, salinity, fluoride, heavy metals, arsenic and ion contents of the geothermal water, and gave the preliminary evaluation on its agricultural suitability. The results are as follows： Fluoride content is the most important limiting factor for agriculture, followed by chloride, and salinity is the third limiting factor. The water coming from hot springs in most areas of Guangdong was unsuitable for directly using on farmland. Scientific and reasonable recharge system for hot springs was recommended.

关 键 词：地热资源 农用适宜性 广东 

分 类 号：P314.1[天文地球—固体地球物理学]