| 植被刈割对红壤酸度及有机无机复合状况的影响 |
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| 引用本文： | 曾希柏,刘更另.植被刈割对红壤酸度及有机无机复合状况的影响[J].土壤学报,2000,37(2):225-232. |
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| 作者姓名： | 曾希柏 刘更另 |
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| 作者单位： | 中国农业科学院农业自然资源和农业区划研究所山区研究室，北京 100081 |
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| 基金项目： | 国家自然科学基金九五重点资助项目(49631010)和中国博士后科学基金[中博基(1997)7号 |
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| 摘 要： | 在红壤地区自然植被（白茅）条件下，不同的刈割周期对土壤交换性盐基离子组成、土壤有机质、有机无机复合体、腐鱼质组成及铁、铝氧化物含量等均具有较大的影响。从１年刈割一次至６刈割一次处理，虽然土壤酸度的变化无明显规律，但土壤交换性钾、无定形铁、无定形铝、络合态铁的含量及铁活化度值均呈增加趋势，且土壤有机质和复合体的含量相应增高，松结态腐残质／紧结态腐殖质的比值亦增大，即腐残质的活性较强、质量较高，土壤肥
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| 关 键 词： | 刈割 土壤酸度 有机无机复合 红壤 水土保持 |
| 收稿时间： | 1998/7/21 0:00:00 |
| 修稿时间： | 1998年7月21日 |
EFFECTS OF CUTTING FREQUENCY OF NATURAL VEGETATION ON ACIDITY AND ORGANO-MINERAL COMPLEX IN RED SOILS |
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| Zeng Xi-bo and Liu Geng-ling.EFFECTS OF CUTTING FREQUENCY OF NATURAL VEGETATION ON ACIDITY AND ORGANO-MINERAL COMPLEX IN RED SOILS[J].Acta Pedologica Sinica,2000,37(2):225-232. |
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| Authors: | Zeng Xi-bo and Liu Geng-ling |
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| Institution: | Upland Research Center, Institute of Agricultural Natural Resources and Agricultural Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081;Upland Research Center, Institute of Agricultural Natural Resources and Agricultural Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081 |
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| Abstract: | Based on the long-term experiments of different cutting frequency of natural vegetation (Imperata cylindrica var. major), in red soils of south of Hunan Province, the changes of contents of organo-mineral complex, acidity and Fe, Al oxides were studied. The results showed that the changes of the soil acidity were not any regular,but the contents of organic matter, organo-mineral complex, exchangeable K, amorphous Fe and Al, complex Fe and value of loosely combined/ tightly combined, activation degree of Fe in the soil had a tendency of increasing, whereas the contents of exchangeable Na and Ca, free Fe and Al were decreased relatively when the cutting frequency treatments from one year to 6 years. |
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| Keywords: | Cutting Acidity of soil Organo-mineral complex Fe and Al oxides |
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