重金属(Zn、Cd)污染对土壤中速效磷的影响  

Effect of Heavy Metal(Zn,Cd) Pollution on Available P in the Soil

作　　者：依艳丽[1] 周咏春[1] 张大庚[1] 栗杰[1] 程希雷[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110161

出　　处：《土壤通报》2009年第3期668-672,共5页Chinese Journal of Soil Science

基　　金：国家自然基金项目(40771111)资助

摘　　要：通过室内模拟方法研究了重金属(Zn、Cd)污染对土壤中速效磷的影响。结果表明:在短时间内,低浓度Zn使速效磷含量升高,高浓度Zn使速效磷含量降低,但随时间增长低浓度Zn便使速效磷含量降低,且有随Zn浓度增加速效磷含量降低的趋势;在短时间内,Cd使速效磷含量升高,但随时间增长则转变为Cd使速效磷含量降低;Zn、Cd复合污染也使速效磷含量降低,且影响强于Zn、Cd单一污染;施肥可以缓解Zn、Cd单一及复合污染对速效磷的影响。Effects of heavy metal （Zn, Cd） pollution on available P in the soil were studied in the incubation experiments. The results showed that adding low concentration Zn, the content of available P was increased in short time. But adding high concentration Zn, the content of available P was decreased in long time. In short time, adding Cd, the content of available P was increased. But in long time, adding Cd, the content of available P was decreased. The content of available P was also increased in the treatment of Zn and Cd combined pollution, and the effect was stronger than in the treatment of Zn and Cd single pollution.

关 键 词：ZN CD污染 速效磷 

分 类 号：S153[农业科学—土壤学]