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ZAKIR Shahidanasreen 《东北农业大学学报(英文版)》2011,18(2):30-35
Heavy metals were evaluated in the soils of grain fields in Hailun City Experimental Research Station--Chinese Academy of Sciences (CAS). Four categories of the soil samples were chosen from the fields after 19 years of treatment with chemicals, no fertilizer, organic manure, and organic manure combined with chemical fertilizer. The study revealed a prevalence of significantly high concentrations of Cu, Zn and Pb in organic manure combined with chemical fertilizer in the grain fields of black soils. The con... 相似文献
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