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.
参考文献
相似文献
引证文献
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. 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.