title: [Cadmium accumulation and its development tendency in black soil under long-term fertilization].
abstract: Based on the long-term field experiment at Hailun Agro-ecosystem Experimental Station of Chinese Academy of Sciences, this paper studied the cadmium (Cd) accumulation, its development tendency, and Cd availability in black soil under effects of long-term application of chemical N and P fertilizers and pig manure. The results showed that under no fertilization, soil Cd concentration had a slight increase. Long-term chemical N and P fertilization increased soil Cd concentration significantly, but soil Cd accumulation had less difference under different N and P fertilization rates. Applying pig manure increased the Cd accumulation in soil significantly, and the accumulation had a tendency of speed-up. Cd-containing feedstuff additives could be the important source of Cd in pig manure. No significant effects of chemical N and P fertilization were observed on the Cd availability in soil, but long-term application of pig manure increased the Cd availability significantly.
authors.affiliation: Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China. changyintan@yahoo.com
authors.forename: Chang-yin
authors.initials: CY
authors.lastname: Tan
authors.forename: Long-hua
authors.initials: LH
authors.lastname: Wu
authors.forename: Yong-ming
authors.initials: YM
authors.lastname: Luo
authors.forename: Jian-ming
authors.initials: JM
authors.lastname: Xu
authors.forename: Xiao-zeng
authors.initials: XZ
authors.lastname: Han
authors.forename: Yun-fa
authors.initials: YF
authors.lastname: Qiao
mesh_terms: D000383:Agriculture / Q000379:methods*; D002104:Cadmium / Q000032:analysis*; D002681:China; D018556:Crops, Agricultural / Q000254:growth & development*; D005308:Fertilizers; D008372:Manure; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*; D013997:Time Factors
chemical_list: D005308:Fertilizers; D008372:Manure; D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium