Abstarct: In order to study of the effects of hydropriming, deep of planting and nitrogen dividing on yield and yield components of corn (Zea mays L.), An experiment was carried out as factorial baxsed on randomized complete block design with four replications. The investigated factors are namely, 1) nitrogen fertilization dividing at three levels: A1= 400 Kg per hectare, A2=100 Kg per hectare + 300 Kg per hectare and A3=100 Kg per hectare + 150 Kg per hectare + 150 Kg per hectare. 2) deep of planting at two levels: B1= 5 centemeter, B2= 10 centemeter and 3) hydropriming at two levels: C1= non priming and C2= priming. The results of this study showed that hydropriming and nitrogen dividing had the potential to increase maize growth during growth season and in harvest time caused increased the grain yield, biological yield, plant height, 1000-seed weight, number of seed per ear, weight of ear, seed row per ear, number of seed per row, ear length, ear wood weight and ear wood diameter significantly. deep of planting can be able increased all of the studied parameters (except number of 1000-seed weight, seed row in ear and harvest index) significantly. The interaction effect of nitrogen dividing and deep of planting was significant only for plant height. The interaction effect of hydro-priming and nitrogen dividing were significant on grain yield, biological yield, plant height, 1000-seed weight and weight of ear. The interaction effect of hydro-priming and deep of planting and The tripartite can not be able to affect on the studied parameters. The results of this experiment show the benefits of hydro-priming and nitrogen dividing in improvement of yield and yield component of corn.