河南郑州郊县保护地养分及重金属含量演变趋势  

Available Nutrient and Trace Metal Concentrations in Protected Soils of Zhengzhou Suburb

作　　者：李见云[1] 化全县[2] 候彦林[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]中国科学院南京土壤研究所,江苏南京210008

出　　处：《土壤通报》2005年第5期669-671,共3页Chinese Journal of Soil Science

基　　金：国家自然科学基金项目(40071053)

摘　　要：对河南郑州郊县不同种植年限保护地土壤速效氮、磷、钾及重金属铜、锌、镉、铅含量调查表明:随保护地种植年限的增加,速效氮、磷含量有显著的增加,其增加与种植年限呈极显著正相关,速效钾含量增加幅度不大,说明氮、磷、钾肥施用不均衡;重金属铜、锌、铅含量随保护地种植年限的增加有一定的增加,镉含量没有明显的规律性,但这几项重金属含量均比农田含量要高,说明在保护地高强度施肥及人为活动下,引入了重金属;农田及保护地重金属含量较土壤背景值均有一定程度的增加,但未超出国家土壤环境质量标准。We investigated soil available N, P, K and trace metal concentrations in protected soils of Zhengzhou suburb. The results showed that with the planting history went by, available N and P had a significant increase, and available K also had some extent of increase. Trace copper, zinc, cadmium and lead in the protected soil was higher than that of other field. With the increase of planting history, their concentrations were also going up, but they did not exceed the quality criterion of soil environment.

关 键 词：郑州郊县 保护地 速效养分 重金属 

分 类 号：S62[农业科学—园艺学] S153.61