Improving Wheat Yield and Phosphorus Use Efficiency through the Optimization of Phosphorus Fertilizer Types Based on Soil P Pool Characteristics in Calcareous and Non-Calcareous Soil

Irrational phosphorus (P) nutrient management practices often fail to match of P fertilizer type, soil transformation and crop demand, lead increased accumulation legacy P, reduced PUE, pollution, affecting production. A pot experiment incorporating types (SSP, simple superphosphate; CMP, calcium magnesium phosphate; DAP, diammonium TSP, triple APP, ammonium polyphosphate; CK, no application) establish coupling the types, pool characteristics, uptake. In calcareous soil, available concentrations in rhizosphere were higher under TSP with increase NaHCO3-Pi concentration most. non-calcareous NaOH-Pi most SSP, at anthesis. Shoot maturity was highest respectively, two soil. APP significantly yield PUE while DAP performed better NaOH-Po are potentially sources which remarkably affect shoot uptake through H2O-P. Comprehensive assessment relationship between recommended for application soils wheat cropping systems.