| 土壤有机结合态锌的分级及其活性的研究 |
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| 引用本文： | 韩凤祥,胡霭堂.土壤有机结合态锌的分级及其活性的研究[J].南京农业大学学报,1990,13(1):68-74. |
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| 作者姓名： | 韩凤祥 胡霭堂 |
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| 作者单位： | 中国科学院南京土壤研究所
(韩凤祥)，南京农业大学土壤农业化学系
(胡霭堂)，南京农业大学土壤农业化学系(秦怀英) |
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| 摘 要： | 用 pH9.5 0.1mol/L Na_4P_2O_7和 H_2O_2有效地将土壤有机态锌区分为松结有机态及紧结有机态。松结有机态对负荷水平、培养时间及土壤 pH 等环境因子的反应较紧结有机态更为敏感;同时松结有机态锌对活性锌的贡献远远大于后者。土壤中松结有机态锌与紧结有机态锌的相互转化是直接影响土壤锌的营养供应或污染致毒程度的重要缓冲体系之一。
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| 关 键 词： | 土壤 有机结合态 锌 分级 活性 |
FRACTIONATION OF ZINC BOUND TO ORGANIC MATTER IN SOIL |
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| Han Fengxiang.FRACTIONATION OF ZINC BOUND TO ORGANIC MATTER IN SOIL[J].Journal of Nanjing Agricultural University,1990,13(1):68-74. |
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| Authors: | Han Fengxiang |
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| Abstract: | Zinc bound to organic matter in soil can be effectively divided into that weaklybound to organic matter(WBO) and that strongly bound to orgnic matter (SBO) by anextractant with 0.1mol/L Na_4P_2O_7 at pH 9.5.The WBO-Zn is more sensitive to Zincloaded levels,incubation period and soil pH than the SBO-Zn.On the other hand,WBO-Zn is more available for plant than SBO-Zn.The transformation betweenWBO-Zn,SBO-Zn and even others is one of the important buffer systms whichdirectly controls soil Zinc availability and toxicity for plant. |
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| Keywords: | trace clement Zinc bound to organie matter fractionation Zinc |
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