Efficient fertilizing method for grape cultivation

The invention provides an efficient fertilizing method for grape cultivation. The efficient fertilizing method particularly comprises the following steps: (1) basal dressing: at first, organic fertilizers are fully applied, and then 1-3 kg of an inorganic nitrogenous fertilizer is applied to each plant; (2) topdressing: the first time of topdressing is in the early stage of blossoming, and 1.5-2 kg of a phosphorus-potassium nitrate fertilizer is applied as topdressing to each plant; the second time of topdressing is after blossom drop, and 1.5-2 kg of ammonium phosphate is applied as topdressing to each plant; the third time of topdressing is in the preliminary stage of fruit coloring, and 0.8-2 kg of a potassium sulfate fertilizer is applied as topdressing to each plant; and the fourth time of topdressing is after fruit picking, and 1.5-2 kg of phosphorus-potassium nitrate is applied as topdressing to each plant; and (3) fertilizer spraying: in the period after fruit setting and before ripening, 0.3-0.5% cal