| 干旱区绿洲土壤中胡萝卜对Zn Ni复合污染的响应 |
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| 引用本文： | 臧振峰,南忠仁,王胜利.干旱区绿洲土壤中胡萝卜对Zn Ni复合污染的响应[J].西北农业学报,2011,20(10):85-89. |
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| 作者姓名： | 臧振峰 南忠仁 王胜利 |
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| 作者单位： | 西部环境教育部重点实验室兰州大学资源环境学院; |
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| 基金项目： | 国家重点基金(NSFC91025015) |
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| 摘 要： | 通过盆栽试验,分析Zn-Ni复合污染对胡萝卜生长及其Zn、Ni吸收累积特征的影响。结果表明,Zn-Ni复合污染下,低于TS5(Zn 450 mg/kg、Ni 350 mg/kg)处理水平促进胡萝卜生长,超过这个处理水平,胡萝卜生长受到不同程度抑制,其生物量在TS8(Zn 1 000 mg/kg、Ni 1 100 mg/kg)处理水平显著下降(P<0.05)。胡萝卜块茎、茎叶对Zn、Ni的富集能力为Zn>Ni,即Zn更容易由土壤进入胡萝卜体内。Zn、Ni在胡萝卜体内由地下部分向地上部分的迁移能力为Zn>Ni,表明Zn更容易由胡萝卜地下部分向地上部分迁移。由Zn、Ni的转移系数可知,Zn主要累积在胡萝卜的茎叶中,而Ni主要累积于胡萝卜的块茎中,所以Ni可能更容易对人类健康造成威胁。
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| 关 键 词： | 绿洲土壤 胡萝卜 Zn-Ni复合污染 响应 |
Responses of Carrot under Zn Ni Combined Pollution in Arid Oasis Soil |
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| ZANG Zhenfeng,NAN Zhongren and WANG Shengli.Responses of Carrot under Zn Ni Combined Pollution in Arid Oasis Soil[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(10):85-89. |
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| Authors: | ZANG Zhenfeng NAN Zhongren and WANG Shengli |
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| Institution: | ZANG Zhenfeng,NAN Zhongren and WANG Shengli (Key Laboratory of Western China's Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | Growth responses of carrot and its accumulation characteristics of Zn and Ni were analyzed under Zn-Ni combined pollution through pot experiment.The results showed that when the amendments were lower than TS5(Zn 450 mg/kg and Ni 350 mg/kg),the growth of carrot was promoted under Zn-Ni combined pollution,once over TS5,that was inhibited to different extent,especially,the biomass of carrot decreased significantly at TS8(Zn 1 000 mg/kg and Ni 1 100 mg/kg).The accumulation ability of tuber and stem leaf of carr... |
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| Keywords: | Oasis soil Carrot Zn-Ni combined pollution Responses |
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