| 酸性土壤中度和高度稳定有机磷的分组研究 |
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| 引用本文： | FAN Ye-Kuan,LI Shi-Jun. 酸性土壤中度和高度稳定有机磷的分组研究[J]. 土壤圈, 1998, 8(3): 261-266 |
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| 作者姓名： | FAN Ye-Kuan LI Shi-Jun |
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| 作者单位： | Department of Resources, Environment and Agrochemistry, Huazhong Agricultural University, Wuhan 430070 (China);Department of Resources, Environment and Agrochemistry, Huazhong Agricultural University, Wuhan 430070 (China) |
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| 基金项目： | *1Project supported by the National Natural Science Foundation of China (No.49571041) and the Hubei Provincial Natural Science Foundation, China (No.95J39). |
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| 摘 要： | The fractionation of moderately and highly organic phosphorus (Po) in acid soil was studied by two methods. By the first method, after incubation for 40 d, the mineralization rates of eight constituents of stable Po in the soil were determined. By the second method, five constituents of precipitates of stable Po in the soil were separated, then the five precipitates were put back into the original soils and incubated for 40 d and 60 d. Then, mineralization rates of the five precipitates were determined. The same results were obtained by the two methods. When the pH of the alkali solution containing stable Po was adjusted from 3.00 to 3.10, the mineralization rate of moderately stable Po was rapidly raised. Therefore, the pH 3.00 is the critical point between moderately and highly stable Po.
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| 关 键 词： | fractionation mineralization rate soil stable organic P |
Fractionation of moderately and highly stable organic phosphorus in acid soil |
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| FAN Ye-Kuan and LI Shi-Jun. Fractionation of moderately and highly stable organic phosphorus in acid soil[J]. Pedosphere, 1998, 8(3): 261-266 |
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| Authors: | FAN Ye-Kuan and LI Shi-Jun |
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| Affiliation: | Department of Resources, Environment and Agrochemistry, Huashong Agricultural University, Wuhan 430070 China. |
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| Abstract: | The fractionation of moderately and highly organic phosphorus (Po) in acid soil was studied by two methods. By the first method, after incubation for 40 d; the mineralization rates of eight constituents of stable Po in the soil were determined. By the second method, five constituents of precipitates of stable Po in the soil were separated, then the five precipitates were put back into the original soils and incubated for 40 d and 60 d. Then, mineralization rates of the five precipitates were determined. The same results were obtained by the two methods. When the pH of the alkali solution containing stable Po adjusted from 3.00 to 3.10, the mineralization rate of moderately stable Po was rapidly raised. Therefore, pH 3.00 is the critical point between moderately and highly stable Po. |
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| Keywords: | fractionation mineralization rate soil stable organic P |
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