Abstract: The requirement and accumulative trend of N, P and K in wine grape‘Cabernet Sauvignon’were studied. The resultswere showed that the leaf had the most variable nitrogen and phosphorus concentration, but during the stage from berry swelling to coloring, the concentrations of nitrogen and phosphorus in the leaf were relatively stable. Berry had the greatest change in potassium concentration, which was relatively stable during ripening. The amounts of N, P and K accumulated by Cabernet Sauvignon were tending to increase in whole growth stage and achieved the maximum amounts in ripening. The amounts of N, P₂O₅, and K₂O required by Cabernet Sauvignon for producing 1 000 kg fruit was 5.95, 3.95 and 7.68 kg, respectively. The proportion of nutrients required by Cabernet Sauvignon was 10.0∶7.0∶13.0 (N∶P₂O₅ ∶K₂O). Therefore, it
was advised that the period during the stage from berry swelling to coloring was the optimum period to diagnose the status of nitrogen and phosphorus and N fertilizer should be mainly applied at blossom, phosphorus be applied before berry swelling and potassium be applied between berry swelling and coloring for the Cabernet Sauvignon.

Key words: Wine grape, Nutrient, Requirement, Accumulative trend, Fertilization