| 亚热带和热带土壤的磁化率 |
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| 引用本文： | 俞劲炎,詹硕仁,吴劳生,朱祖祥.亚热带和热带土壤的磁化率[J].土壤学报,1986,23(1):50-56. |
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| 作者姓名： | 俞劲炎 詹硕仁 吴劳生 朱祖祥 |
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| 作者单位： | 浙江农业大学;浙江农业大学;浙江农业大学;浙江农业大学 |
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| 摘 要： | 亚热带和热带土壤的磁化率X变化大,高的达2000—6000单位(昆明玄武岩红壤),低的只几个单位(沼泽土、强还原性水稻土、磷质石灰土)。大体上是:自型土>潮土>水稻土>沼泽土。在自型土中,砖红壤、红壤的X值大于石灰岩土和紫色土。红壤的磁性受母岩和发育度的影响大。各地的玄武岩红壤的X值为3×102—6×103单位,其他红壤多为100—40单位(中性和酸性岩浆岩,多数沉积岩),或40—10单位(一部分石灰岩、凝灰岩)。灼烧土壤而得到的X-t曲线和“转化率”E,可粗略地反映磁赤铁矿生成的相对程度,进而估计红壤化的程度,似可在红壤的诊断、鉴定中试用。
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THE MAGNETIC SUSCEPTIBILITY OF THE SOILS IN SUBTROPICAL AND TROPICAL CHINA |
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| Yu Jinyan,Zhan Shouren,Wu Laoshang and Chu Tsusiang.THE MAGNETIC SUSCEPTIBILITY OF THE SOILS IN SUBTROPICAL AND TROPICAL CHINA[J].Acta Pedologica Sinica,1986,23(1):50-56. |
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| Authors: | Yu Jinyan Zhan Shouren Wu Laoshang and Chu Tsusiang |
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| Institution: | Zhejiang Agricultural University;Zhejiang Agricultural University;Zhejiang Agricultural University;Zhejiang Agricultural University |
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| Abstract: | In the present paper, the magnetic sasceptibility (m. s.) of red earths, lateritic red earths, latosols, young calcareous soils and paddy sails in subtrapie aad tropic China is reported.. The m. s. is greatly influenced by parent rocks. The m. s. values of red earths and latosols derived from basalt and andesite amount to 300-500 units and even Up to 2000-6000 units (10-6 emn/g).Those of red earths and latoeols on granite and ether acid magmatic rocks amount to 40-100 units, and those of red earths and latosols on limestone, shale, sandstone and tuff amonat only to 10-40 units mostly. |
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