农业环境保护2001，Vol.20Issue(3)：133-136,4.
旱田养分淋溶规律及对地下水影响的研究
Eluviation of Nutrients in Glebe－ Soil and Its Influence on Groundwater
任丽萍 1宋玉芳 1许华夏 1巩宗强 1姚德明1
作者信息
摘要
Abstract
A simulative leaching experiment was carried out with black straw and N, P, K fertilizers as test materials using one－ meter soil layer to evaluate eluviation of the various nutrients in glebe－ farmland and its environmental impacts, mainly, on potential contamination of groundwater. The results showed that eluviation of nitrogen was positive correlation with applied amounts of fertilizers and － N was the major form of eluviation of nitrogen. The leaching rate of － N was composed of 15.85％ of fertilizing amount, resulting in pollution of 20mg· L－ 1 in groundwater, which was higher than the standard of 10mg· L－ 1 for drinking water quality issued by WHO. Immobilization was major form of eluviation of phosphorus in the soil, which was negligible different from control and causing little contamination on groundwater. It has also been found that the eluviation of potassium was 14.3mg· L－ 1, which exceeded the standard of 12mg· L－ 1 for drinking water quality issued by EEC and had a potential environmental impact on groundwater when the soil receiving potassium of 120kg· hm－ 2.关键词
旱田/施肥量/养分淋溶/地下水/影响分类
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任丽萍,宋玉芳,许华夏,巩宗强,姚德明..旱田养分淋溶规律及对地下水影响的研究[J].农业环境保护,2001,20(3):133-136,4.
