| 红壤中针铁矿的铝替代及其与土壤发育的关系 |
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| 引用本文： | 章明硅,俞震豫.红壤中针铁矿的铝替代及其与土壤发育的关系[J].科技通报,1991,7(6):326-329. |
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| 作者姓名： | 章明硅 俞震豫 |
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| 作者单位： | 浙江农业大学土化系 杭州310029 |
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| 摘 要： | 在研究的红壤类土壤样品中普遍存在着针铁矿的铝同晶替代作用,供试样品中针铁矿铝替代量为0.14％～27.21％(摩尔百分数),平均为8.77％。红壤亚类、黄红壤亚类和黄壤亚类平均依次为10.32％、9.79％、1.30％,其中红壤、黄红壤亚类与黄壤亚类之间差异明显,这反映了成土条件的差异。土壤中针铁矿的铝替代量与粘粒中铁的游离度正相关,与土壤粉砂粘粒比负相关,说明针铁矿中铝替代量随土壤发育的增加而增加。
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| 关 键 词： | 针铁矿 铝替代量 红壤 土壤发育 |
The Aluminum Substitution of Goethite in Red Earths and Its Correlation with the Development of Soil |
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| Zhang Minkui,Yu Zhenyu,Wang Renchao,Li Renan,Zhejiang Agricultural Universty,Hangzhou.The Aluminum Substitution of Goethite in Red Earths and Its Correlation with the Development of Soil[J].Bulletin of Science and Technology,1991,7(6):326-329. |
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| Authors: | Zhang Minkui Yu Zhenyu Wang Renchao Li Renan Zhejiang Agricultural Universty Hangzhou |
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| Abstract: | This paper dealt with the Al-substitution of goethite in Red Earths, and the relationship between the Al-substitution of goethite and the development of soil. The Al-substitution of goethite in soil increased in the order of the Yel- low Earth subgroup, the Yellow-Red Earth subgroup, and the Red Earth subgr- oup. The differentia of the Al-substitution of goethite between the Yellow Earth and the Red Earth the Yellow-Red Earth were quite significant, but it was insignificant between the Red Earth and the Yellow Red Earth. Positive cor- relation was found in the Al-substitution of goethite to the clay Fe (d)/Fe(t), but it was negatively, correlated to the soil-silt/clay, that meant the Al-substi- tution of goethite in Red Earth increased with the development of soil. So, the content of Al-substitution of goethite in the diagnostic horizon reflected not only the special pedogenic condition of Red Earth, but also the characterized pedo- genic process. |
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| Keywords: | goethite content of the Al-substitution Red Earth development of soil |
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