CAJ | 학술논문

通过室内土壤培养试验研究硅藻土有机肥对Cd、Zn复合污染土壤重金属形态和有效性的影响。结果表明，添加硅藻土有机肥可提高Cd、Zn复合污染土壤的pH值，降低土壤有效态Cd、Zn的含量。硅藻土有机肥对Cd、Zn复合污染土壤Cd、Zn形态有明显的影响，表现为明显降低土壤交换态、松结有机态Cd、Zn含量，提高紧结有机态和残渣态Cd、Zn含量。相关分析表明，土壤交换态、松结有机态Cd、Zn的含量与土壤有效态Cd、Zn的含量均呈极显著相关，氧化锰结合态Cd与土壤有效态Cd含量显著相关。硅藻土有机肥用量（土壤重量的5%和10%）对土壤有效态Cd、Zn和不同形态Cd、Zn含量无显著差异。
통과실내토양배양시험연구규조토유궤비대Cd、Zn복합오염토양중금속형태화유효성적영향。결과표명，첨가규조토유궤비가제고Cd、Zn복합오염토양적pH치，강저토양유효태Cd、Zn적함량。규조토유궤비대Cd、Zn복합오염토양Cd、Zn형태유명현적영향，표현위명현강저토양교환태、송결유궤태Cd、Zn함량，제고긴결유궤태화잔사태Cd、Zn함량。상관분석표명，토양교환태、송결유궤태Cd、Zn적함량여토양유효태Cd、Zn적함량균정겁현저상관，양화맹결합태Cd여토양유효태Cd함량현저상관。규조토유궤비용량（토양중량적5%화10%）대토양유효태Cd、Zn화불동형태Cd、Zn함량무현저차이。
An indoor soil cultivation experiment was carried out to study the effects of diatomite organic fertilizer on the forms and the avail-ability of Cd, Zn in soil. The results showed that the soil pH increased, the soil available Cd and Zn reduced after diatomite organic fertilizer application in contaminated soil. Diatomite organic fertilizer application decreased the contents of exchangeable form and weakly-bound-to organic form of Cd and Zn significantly, but increased the contents of strongly-bound-to organic form and residual form of Cd and Zn in con-taminated soil. Statistics analysis showed that the contents of exchangeable and weakly-bound-to organic form of Cd and Zn had highly sig-nificant relation to the content of soil available Cd and Zn(P<0.01). The contents of Mn oxide-occluded Cd had significant relation to the con-tent of soil available Cd(P<0.05). Comparing the treatments of diatomite organic fertilizer with the rate of 5%and 10%soil weight, there was no significant difference in soil pH, the contents of soil available Cd, Zn and the forms of Cd, Zn.