Yes.
When drones spray urea, the soil organic matter content is high, the base fertilizer and seed fertilizer are sufficient, and the corn grows well. It is also possible to topdress with fertilizer once. The depth of topdressing must be more than 10 cm, so as to improve the utilization rate of chemical fertilizers.
The correct methods of fertilizing corn include foliar fertilization and irrigation fertilization. If conditions permit, drone spraying can be carried out. Corn fertilizer can be applied in furrows or holes. Do not spread it. It should be 5-10 cm away from the corn. Fertilizer with water, foliar spraying and other methods.