In order to further improve the yield and fertilizer utilization efficiency of confectionery sunflowers in Northern Hebei Province,taking local main cultivar Sandaomei as the tested material,the effects of N,P and K balanced fertilization combination on the agronomic traits, yield and nutrient uptake and utilization of confectionary sunflowers were studied. The results indicated that the effects of N, P and K on the yield of confectionary sunflower seeds were ordered as K >N >P. The application of N, P and ...