CAJ | 학술논문

　　采用盆栽培育土壤的方式，通过修正的Tessier连续提取法(七步法)研究了N、P和K肥对外源Cd、Pb污染土壤重金属赋存形态的影响。结果表明，无论是原土还是添加外源性Cd、Pb的污染土壤，Pb基本被固定在残渣态和铁锰氧化物结合态，在外源Cd、Pb污染土壤中添加肥料可降低Pb的铁锰氧化物结合态等较稳定形态的赋存比例，提高生物可利用态的百分比，促进Pb向植物体系的迁移。原土中的Cd大部分处于生物可利用态，当外源性Cd污染进入土壤，离子交换态进一步增加，且土壤中Cd的浓度越大离子交换态所占的百分比越高。向中低浓度的Cd污染土加入肥料可增加离子交换态的赋存比例，提高土壤中Cd的活性；对更高浓度的Cd污染土，离子交换态已基本饱和，加入肥料对Cd的形态分布未有显著影响。添加肥料可促进土壤中外源性重金属Cd和Pb向植物体系迁移，为植物修复重金属污染土壤提供技术支持。
　　채용분재배육토양적방식，통과수정적Tessier련속제취법(칠보법)연구료N、P화K비대외원Cd、Pb오염토양중금속부존형태적영향。결과표명，무론시원토환시첨가외원성Cd、Pb적오염토양，Pb기본피고정재잔사태화철맹양화물결합태，재외원Cd、Pb오염토양중첨가비료가강저Pb적철맹양화물결합태등교은정형태적부존비례，제고생물가이용태적백분비，촉진Pb향식물체계적천이。원토중적Cd대부분처우생물가이용태，당외원성Cd오염진입토양，리자교환태진일보증가，차토양중Cd적농도월대리자교환태소점적백분비월고。향중저농도적Cd오염토가입비료가증가리자교환태적부존비례，제고토양중Cd적활성；대경고농도적Cd오염토，리자교환태이기본포화，가입비료대Cd적형태분포미유현저영향。첨가비료가촉진토양중외원성중금속Cd화Pb향식물체계천이，위식물수복중금속오염토양제공기술지지。
Pot experiments and soil incubation experiments were conducted to investigate the effects of chemical fertilizer added into soil on speciation transformation of exogenous Cd and Pb by the method of seven-step sequential extraction. As shown by the experimental results, Pb was fixed in carbonate-bound and Fe-Mn oxides-bound whatever the original soil or the contaminated soil added Cd and Pb exogenously. The percentage of CBD-Pb was reduced and the bioavailable state of Pb increased by adding chemical fertilizer. Chemical fertilizer can promote the migration of Pb to plant system. The percentage of biological available fractions of Cd was most in the original soil and increased further by adding Cd and Pb exogenously. And the concentration of Cd is higher in soil, the percentage of EXC-Cd is greater. It can increase the ratio of EXC-Cd and promote the migration of Cd by adding chemical fertilizer for low concentration of Cd pollution. It can promote the migration of Cd and Pb exogenously to plant system by adding chemical fertilizer.