中文摘要：

采用TESSIER连续提取法研究了不同种类、不同加入量的无机钠盐对土壤中不同形态cu含量的影响。结果表明，对于可交换态Cu，3种无机钠盐的加入均使其含量减少，其中NaCl的影响最大，4、8g／kg的NaCl分别使其减少了28．13％（质量分数，下同）和50．59％；对于碳酸盐结合态Cu，3种无机钠盐的加入均使其含量增加，其中Na2CO3（8g／kg）对其影响最大；对于铁锰氧化态Cu，Na2SO4和Na2CO3的加入使其含量先升高后降低。NaCl则使其含量降低；有机结合态Cu受Na2SO4和Na2C03的影响较大，在它们的影响下含量均增加；残渣态Cu在3种无机钠盐的影响下变化幅度均很大，其中4、8g／kg的Na2SO4分别使其含量减少了47．47％和62．21％。

英文摘要：

Tessier sequential extractive method was used to study the effect of 3 inorganic sodium salts （Na2CO3, Na2SO4, NaCI） on different copper ions forms in soil. Results showed that the 3 sodium salts would de- crease the contents of exchangeable copper in soil, especially NaCl. When the concentration of NaC1 was 4 and 8 g/kg, the exchangeable copper in soil were decreased by 28.13 % and 50.59 % respectively. The content of carbonate- copper in soil was increased after adding 3 sodium salts, and Na2CO3 （8 g/kg） had the largest impact on carbonate copper. The content of ferric-manganese oxidation state copper was increased first and then decreased after adding Na2 SO4 and Na2 CO3 in soil; and NaClwould decrease the ferric-manganese oxidation state copper content. The con- tent of organic copper was increased a lot after adding Na2 SO4 and Na2 CO3 ; when the concentration of Na2 SO4 was 4 and 8 g/kg, the content of residual copper was decreased by 47.47% and 62.21% respectively.