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Chinese Journal of Applied Ecology ›› 2003, Vol. ›› Issue (11): 1997-2000.

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Effect of pig manure and rice straw on biological activity of Cd-contaminated soil

ZHANG Yali, SHEN Qirong, XIE Xuejian, SUN Zhaohai   

  1. College of Resources and Environmental Sciences, MOA Key Laboratory of Plant Growth Regulation, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2002-12-26 Revised:2003-03-11 Online:2003-11-15

Abstract: Studies on the effects of pig manure and rice straw on the biological activity of Cd-contaminated permeable paddy soil showed that Cd-contaminated soil had a declined biological activity. After applying organic manure, the content of soil available Cd decreased significantly, being about 40%, and soil microbial C, Nand Pand soil dehydrogenase and catalase activities increased 30%~100%. There existed a negative correlation between soil available Cd and soil microbial Cand N, indicating that microbial Cand Ncould be used as an index of Cd-contaminated soil.

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