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Phosphorus fractions of fertiliser-derived P in an allophanic soil under Pinus radiata seedlings grown with broom and ryegrass

伴生有金雀花、黑麦草的辐射松幼苗Allophanic土壤磷肥驱动的各磷形态变化
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摘要 Changes in phosphorus (P) fractions in a P deficient allophanic soil under P. radiata seedlings grown with broom (Cytisus scoparius L.) and ryegrass (Lolium multiflorum) in pots were studied 14 months after the application of triple superphosphate at the rates of 0, 50, and 100 μg·g-1, to determine the fate of fertiliser-derived P in the rhizosphere soils. Application of P fertiliser increased NaOH-Pi, NaOH-Po, and H2SO4-Pi concentrations in the soil, but decreased the residual-P concentration. The resin-Pi concentration, which is extremely low in this soil (1 to 3 μg·g-1 ), remained the same. The majority of the added fertiliser P was however recovered in the NaOH-Pi fraction (40%?49%). This is due to the high P fixation in this soil (92%). The second highest P recovery was in NaOH-Po fraction (7%?19%). Under P deficient condition or addition at the rate of 0 μg·g-1, the NaOH-Pi concentration in the radiata rhizosphere soil was lower than that in the bulk soil and broom and grass rhizosphere soils. This may be due to higher oxalate production by the roots and mycorrhiza under P deficient conditions which released some of the P fixed to the soils in the rhizosphere, which needs to be tested in future studies. Changes in phosphorus (P) fractions in a P deficient allophanic soil under P. radiata seedlings grown with broom (Cytisus scoparius L.) and ryegrass (Lolium multiflorum) in pots were studied 14 months after the application of triple superphosphate at the rates of 0, 50, and 100 μg·g-1, to determine the fate of fertiliser-derived P in the rhizosphere soils. Application of P fertiliser increased NaOH-Pi, NaOH-Po, and H2SO4-Pi concentrations in the soil, but decreased the residual-P concentration. The resin-Pi concentration, which is extremely low in this soil (1 to 3 μg·g-1 ), remained the same. The majority of the added fertiliser P was however recovered in the NaOH-Pi fraction (40%?49%). This is due to the high P fixation in this soil (92%). The second highest P recovery was in NaOH-Po fraction (7%?19%). Under P deficient condition or addition at the rate of 0 μg·g-1, the NaOH-Pi concentration in the radiata rhizosphere soil was lower than that in the bulk soil and broom and grass rhizosphere soils. This may be due to higher oxalate production by the roots and mycorrhiza under P deficient conditions which released some of the P fixed to the soils in the rhizosphere, which needs to be tested in future studies.
出处 《Journal of Forestry Research》 SCIE CAS CSCD 2009年第A3期229-236,286,共9页 林业研究(英文版)
基金 supported by Centre for Sustainable Forest Management at Forest Research Institute, New Zealand
关键词 Cytisus scoparius Lolium multiflorum phosphorus fertiliser Pinus radiate RHIZOSPHERE soil phosphorus fractions Cytisus scoparius Lolium multiflorum phosphorus fertiliser Pinus radiate rhizosphere soil phosphorus fractions
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  • 1Q. Liu,P. Loganathan,M.J. Hedley,M.F. Skinner. The mobilisation and fate of soil and rock phosphate in the rhizosphere of ectomycorrhizal Pinus radiata seedlings in an Allophanic soil[J] 2004,Plant and Soil(1-2):219~229
  • 2C. R. Chen,L. M. Condron,S. Sinaj,M. R. Davis,R. R. Sherlock,E. Frossard. Effects of plant species on phosphorus availability in a range of grassland soils[J] 2003,Plant and Soil(1):115~130
  • 3Xiaoping Wang,Darlene Zabowski. Nutrient composition of Douglas-fir rhizosphere and bulk soil solutions[J] 1998,Plant and Soil(1):13~20
  • 4A.K.N. Zoysa,P. Loganathan,M.J. Hedley. A technique for studying rhizosphere processes in tree crops: soil phosphorus depletion around camellia (Camellia japonica L.) roots[J] 1997,Plant and Soil(2):253~265
  • 5L. M. Condron,I. S. Cornforth,M. R. Davis,R. H. Newman. Influence of conifers on the forms of phosphorus in selected New Zealand grassland soils[J] 1996,Biology and Fertility of Soils(1-2):37~42
  • 6M. R. Davis. Influence of radiata pine seedlings on chemical properties of some New Zealand montane grassland soils[J] 1995,Plant and Soil(2):255~262
  • 7H. Marschner,B. Dell. Nutrient uptake in mycorrhizal symbiosis[J] 1994,Plant and Soil(1):89~102
  • 8M. J. Hedley,G. J. R. Kirk,M. B. Santos. Phosphorus efficiency and the forms of soil phosphorus utilized by upland rice cultivars[J] 1994,Plant and Soil(1):53~62
  • 9Tara Singh Gahoonia,Niels Erik Nielsen. The effects of root-induced pH changes on the depletion of inorganic and organic phosphorus in the rhizosphere[J] 1992,Plant and Soil(2):185~191
  • 10P. J. Smethurst,E. K. S. Nambiar. Role of weeds in the management of nitrogen in a young Pinus radiata plantation[J] 1989,New Forests(3):203~224
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