| Transformation of Applied Phosphorus in a Calcareous Fluvisol |
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| 作者姓名： | TU SHU-XIN GUO ZHI-FEN CHEN SHAO-SHAN |
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| 作者单位： | Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064;Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064;Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064 |
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| 摘 要： | A new inorganic phosphorus (IP) fractionation scheme developed by Jiang and Gu was used in an incubation experiment to investigate the transformation of applied P in a calcareous fluvisol. The results show that after addition of common superphosphate (CSP), the Ca2-P in the soil decreased gradually and transformed largely to the less available Fe-P, Al-P and Ca8-P, rather than to the unavailable forms of Ca10-P and O-P. The different IP fractions ranked in the following order with respect to the increment by addition of CSP after 120 days of incubation: Fe-P> Al-P>Ca8-P>Ca2-P. After addition of pig manure, the content of Ca2-P in the soil increased rapidly at first and then decreased slowly, and the amount of different IP fractions accumulated after 120 days of incubation ranked in the following order: Ca2-P > Fe-P > Ca8-P > Al-P.
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| 关 键 词： | 无机磷肥 转化 石灰质土壤 |
Transformation of Applied Phosphorus in a Calcareous Fluvisol |
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| TU SHU-XIN,GUO ZHI-FEN,CHEN SHAO-SHAN.Transformation of Applied Phosphorus in a Calcareous Fluvisol[J].Pedosphere,1993,3(3):277-283. |
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| Authors: | TU SHU-XIN GUO ZHI-FEN and CHEN SHAO-SHAN |
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| Institution: | Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064;Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064;Institute of Application of Atomic Energy in Agriculture, Hubei Academy of Agricultural Sciences, Wuhan 430064 |
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| Abstract: | A new inorganic phosphorus (IP) fractionation scheme developed by Jiang and Gu was used in an incubation experiment to investigate the transformation of applied P in a calcareous fluvisol. The results show that after addition of common superphosphate (CSP), the Ca2-P in the soil decreased gradually and transformed largely to the less available Fe-P, Al-P and Ca8-P, rather than to the unavailable forms of Ca10-P and O-P. The different IP fractions ranked in the following order with respect to the increment by addition of CSP after 120 days of incubation: Fe-P> Al-P>Ca8-P>Ca2-P. After addition of pig manure, the content of Ca2-P in the soil increased rapidly at first and then decreased slowly, and the amount of different IP fractions accumulated after 120 days of incubation ranked in the following order: Ca2-P > Fe-P > Ca8-P > Al-P. |
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