| 干湿交替过程中石灰性土壤无机磷的转化及有效性 |
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| 引用本文： | 程传敏,曹翠玉.干湿交替过程中石灰性土壤无机磷的转化及有效性[J].土壤学报,1997,34(4):382-391. |
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| 作者姓名： | 程传敏 曹翠玉 |
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| 作者单位： | 南京农业大学自然资源与环境科学系 |
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| 基金项目： | * 国家自然科学基金,批准号:39170461 |
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| 摘 要： | 盆栽试验和培养试验结果表明：淹水能显著提高石灰性土壤磷含量，其作用顺序为，两合土〉淤土；淹水促使土壤无机磷组分中Ｃａ２－Ｐ、Ｃａ８－Ｐ含量增加，说明石灰性土壤淹水后土壤磷有效性的提高主要是Ｃａ－Ｐ体系的活性提高所致。回旱后，土壤速效磷值明显降低，土壤无机磷组分中，Ｃａ２－Ｐ、Ａｌ－Ｐ、Ｆｅ－Ｐ组分均呈降低趋势，土壤无机磷向难溶态转化。淹水降低了外加磷肥的肥效。
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| 关 键 词： | 干湿交替 石灰性土壤 无机磷形态 |
TRANSFORMATION AND AVAILABILITY OF INORGANIC PHOSPHORUS IN CALCAREOUS SOILS DURING FLOODING AND DRAINING ALTERNATING PROCESS |
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| Cheng Chuanmin and Cao Cuiyu.TRANSFORMATION AND AVAILABILITY OF INORGANIC PHOSPHORUS IN CALCAREOUS SOILS DURING FLOODING AND DRAINING ALTERNATING PROCESS[J].Acta Pedologica Sinica,1997,34(4):382-391. |
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| Authors: | Cheng Chuanmin and Cao Cuiyu |
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| Abstract: | Pot and incubation experiments were carried out to study the effect of alternate flooding and drying on the transformation and availability of phosphorus in calcareous soils. The results indicated that flooding significantly increased P availability in calcareous soil and enhanced the transformation of inorganic phosphate into more available fractions such a Ca2-P and Fe-P. After draining and drying the process reversed in the soils. |
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| Keywords: | Flooding-draining alternating Calcareous soils Inorganic phosphorus fractions |
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