| 磷酸盐位用于土壤需磷诊断的研究 |
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| 引用本文： | 林忠焱.磷酸盐位用于土壤需磷诊断的研究[J].土壤学报,1983,20(3):279-285. |
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| 作者姓名： | 林忠焱 |
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| 作者单位： | 华南农学院 |
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| 摘 要： | 土壤磷酸盐位是研究土壤磷有效度的具有相对能量意义的概念,它的提出为研究土壤磷的问题开辟了一条新的途径2,3,11].磷位值是土壤有效磷的强度指标,把它运用于土壤需磷诊断上,使它成为指导磷肥施用的有用工具,在当前生产上有一定意义.
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A STUDY ON THE APPLICATION OF PHOSPHATE POTENTIAL IN DIAGNOSING PHOSPHORUS REQUIREMENT OF SOILS |
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| Lin Zhongyan.A STUDY ON THE APPLICATION OF PHOSPHATE POTENTIAL IN DIAGNOSING PHOSPHORUS REQUIREMENT OF SOILS[J].Acta Pedologica Sinica,1983,20(3):279-285. |
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| Authors: | Lin Zhongyan |
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| Institution: | Department of Soils and Agriculture Chemistry, South China Agriculture College |
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| Abstract: | Paddy soils and vegetable soils (pH 5.10-6.95,organic matter 1.21-2.95 % and total phosphorus (P) 0.021-0.067%) in granite area of South China were used in pot experiments applied phosphatic fertilizer,and the "A" values for available phos-phorus according to Fried were determined.The soil samples were fractionated for their soil inorganic P-fractions by the procedure of Chang and Jackson.Equilibrium phosogate potentials (1/2pCa+pH2PO4),aluminum phosphate potentials (1/3pAl+pH2PO4),manganese phosphate potentials (1/2pMn+pH2PO4) and RTlnaH2PO4- were determined according to White and Beckett's method. |
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