不同施肥雷竹林土壤重金属含量的动态分析
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S644.2

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浙江省自然科学基金(300209)资助


Dynamics of Heavy Metal Amount in Soil with Different Treatments under Hyllostachys praecox Stands
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    摘要:

    为了解早产高效雷竹林施肥与土壤重金属有效态含量关系,在浙江省雷竹主产区布置了肥料试验,动态采集了各处理土壤样品,用ICP法分析了土壤重金属有效态含量。结果表明:Pb、Cd、Zn、Cr和Cu5种重金属有效态含量,无论是在有机肥化肥混合处理区还是纯化肥处理区随时间变化均有较大波动,5种重金属有效态含量均表现为8月份含量较高,以后则明显下降,到次年4月份又明显升高。比较不同施肥处理土壤重金属有效态含量发现,有效Zn和有效Cr含量在3个不同用量的纯化肥间有显著差异,而不同用量有机肥化肥混施处理间所有重金属有效态含量均无显著差异,有效Pb、Cd、Cu在不同用量纯化肥处理间差异性也不显著。土壤有效Pb、Cr和Zn含量覆盖区显著高于不覆盖区,3种重金属有效态含量覆盖区分别是不覆盖区的1.59倍、1.30倍和1.26倍。

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    The objective of this paper was to reveal if soil available heavy metal amount responded to application of fertilizer under Hyllostachys praecox stands. A fertilizer trial was conducted in the main Hyllostachys praecox area, and the amount of soil available heavy metal was analyzed by ICP. Soil available heavy metal (such as Pb, Cd, Zn, Cr and Cu) in all treatments was detected higher at the first sampling time in August and then declining with time until April, afterwards increasing again. There was no difference in soil available Zn and Cr between mixture treatments with different amount of mineral and manure, but significant difference (p<0.05) was found between single mineral treatments with different amount of mineral fertilizer, soil available Zn and Cr increased with the rate of fertilizer. Soil available Pb, Cd, and Cu did not change with the increase of mineral fertilizer rate. Soil available Pb, Cr, and Zn were more abundant in stands with winter mulching practice than with non-mulching practice, 1.59, 1.30 and 1.26 fold were respective for available Pb, Cd, and Cu.

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姜培坤 徐秋芳.不同施肥雷竹林土壤重金属含量的动态分析[J].水土保持学报,2005,(1):168~170,180

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