| Agronomic Effectiveness of Partially Acidulated Phosphate Rock |
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| 引用本文： | HE NIAN-ZU,SUNQI-WEI. Agronomic Effectiveness of Partially Acidulated Phosphate Rock[J]. 土壤圈, 1994, 4(2): 137-144 |
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| 作者姓名： | HE NIAN-ZU SUNQI-WEI |
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| 作者单位： | [1]DepartmentofLandScienceandAppliedChemistry,ZhejiangAgriculturalUniversity,Hangzhou310029,China [2]Zhejia,ZhejiangAgriculturalUniversity,Hangzhou310029,China |
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| 摘 要： | Laboratorial incubation and field experiments were conducted on soils ranging in texture from sandy loam to clay and in pH from 3.6 to 9.0 to determine the agronomic effectiveness of single superphosphate (SSP).fused magnesium phosphate(FMP) and partially acidulated phosphate rock(PAPR) on 8 field crops.The results showed that the pattern of available P released from SSP was fixing-releasing-fixing-steady state,while that of PAPR was shortly fixing-slowly releasing-fixing steady state.And the PAPR,SSP and FMP were equally effective as judged by yield Puptake by phants and extractable P in soils after crop harvesting,The PAPR used as basal fertilizer was more effective than that as top dressing,and its residual effect was also obvious.
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| 关 键 词： | 大田作物 部分酸化 磷酸盐岩 农业有效性 土壤有效磷 磷 |
Agronomic Effectiveness of Partially Acidulated Phosphate Rock |
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| HE NIAN-ZU and SUNQI-WEI. Agronomic Effectiveness of Partially Acidulated Phosphate Rock[J]. Pedosphere, 1994, 4(2): 137-144 |
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| Authors: | HE NIAN-ZU and SUNQI-WEI |
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| Affiliation: | [1]DepartmentofLandScienceandAppliedChemistry,ZhejiangAgriculturalUniversity,Hangzhou310029,China [2]Zhejia,ZhejiangAgriculturalUniversity,Hangzhou310029,China |
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| Abstract: | Laboratorial incubation and field experiments were conducted on soils ranging in texture from sandy loam to clay and in pH from 3.6 to 9.0 to determine the agronomic effectiveness of single superphosphate (SSP).fused magnesium phosphate(FMP) and partially acidulated phosphate rock(PAPR) on 8 field crops.The results showed that the pattern of available P released from SSP was fixing-releasing-fixing-steady state,while that of PAPR was shortly fixing-slowly releasing-fixing steady state.And the PAPR,SSP and FMP were equally effective as judged by yield Puptake by phants and extractable P in soils after crop harvesting,The PAPR used as basal fertilizer was more effective than that as top dressing,and its residual effect was also obvious. |
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