The invention discloses a
crop phosphate fertilizer application technology for improving
phosphate fertilizer utilization rate, belongs to the field of agricultural
fertilizer application, and specifically relates to the
crop phosphate fertilizer application technology for improving
phosphate fertilizer in-season
utilization rate. The
crop phosphate fertilizer application technology is characterized in that, soil available
phosphorus is fully used, maintenance time of
high concentration available
phosphorus can be reduced, fixation is reduced, the loss is reduced, maximum supply in fertilizer required period is ensured, and the in-season
utilization rate is improved. In middle and
high fertility farmlands, especially in farmlands with the soil available
phosphorus being more than 30mg / kg, a
phosphate fertilizer is not applied in
seedling stage, seedlings are only allowed to absorb soil available phosphorus, 30 to 150 kg per
hectare of phosphate fertilizer (P2O5) is applied in early flower
bud differentiation stage, and the theoretical concentration of the available phosphorus in a
plough layer can be improved by 80-300% compared with original initial concentration. In middle and
low fertility farmlands, especially in farmlands with the soil available phosphorus being lower than 10mg / kg, the phosphate fertilizer is applied in two times; 15-75 kg per
hectare of base fertilizer (P2O5) is applied, 15-75 kg of the fertilizer (P2O5) is applied in early flower
bud differentiation stage, and the theoretical concentration of the available phosphorus in the
plough layer soil can be improved by 80-300% compared with the original initial concentration in the two times of fertilizer application.