| 土壤镍各形态的生物可利用性研究 |
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| 引用本文： | 涂从.土壤镍各形态的生物可利用性研究[J].环境科学学报,1997,17(2):179-186. |
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| 作者姓名： | 涂从 |
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| 作者单位： | 中国科学院南京土壤研究所土壤圈物质循环开放研究实验 |
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| 摘 要： | 采用＾６３Ｎｉ示踪法和连续提取技术，并综合运用剔除法，人工模拟法，幼苗试验法和盆栽试验法及统计分析法研究了各形态土壤镍的植物可利用性。结果表明，土壤中水溶交换态Ｎｉ是植物可利用性Ｎｉ的主要形态，碳酸盐盐和有机态Ｎｉ有一定贡献，铁锰氧化物结合态和残留态Ｎｉ对植物几乎无效。
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| 关 键 词： | 土壤 镍 形态 生物 可利用性 ^63Ni示踪法 |
| 收稿时间： | 1995/7/21 0:00:00 |
BIOAVAILABILITY OF Ni FRACTIONS IN SOILS |
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| Tu Cong.BIOAVAILABILITY OF Ni FRACTIONS IN SOILS[J].Acta Scientiae Circumstantiae,1997,17(2):179-186. |
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| Authors: | Tu Cong |
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| Institution: | LMCP, Instituteof Soil Science, Academia Sinica, Nanjing 210008 |
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| Abstract: | The bioavailability of various Ni fractions in soils was investigated employing 63 Ni tracer technique and sequential extraction procedure as well as synthetic investigation methods including partial dissolution procedure, simulated Ni forms, seedling culture, pot experiment and statistical analysis. The results showed that soluble plus exchangeable Ni was the major fraction of soil Ni available to plant. Nickel bound to carbonate and organic matter might also play some role in Ni uptake by plant. However, Fe/Mn oxide bound and residual Ni were nearly unavailable to plant(in oxidizing environment). |
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| Keywords: | soil nickel fraction bioavailability 63 Ni tracer |
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