To study the relationship between activity of phosphatase and soil organic phosphorus in the rhizosphere and hyphosphere,mycorrhizal and non\|mycorrhizal red clover(\%Trifolium pratense\% L)were grown 10 weeks in sterilized soils in PVC pots with three compartments,a top one for root growth(rhizosphere),the central one for hyphal growth(hyphosphere)and the bottom where root and hyphae could not penetrate.The results showed that different phosphorus sources exerted different effects on soil phosphatase activ...