Abstract: A planter suitable for block seeds that relates to the technical field of agricultural seeding machinery is disclosed. The planter includes a frame, a fertilizing tank, a fertilizing box, a seeding mechanism, a control mechanism, a seed box, a ridging mechanism, land wheels, a seeding furrower, a fertilizing furrower, a seed-clearing mechanism, and a replanting mechanism. The fertilizing tank, the fertilizing furrower, the fertilizing box, the seeding furrower, the seeding mechanism, the land wheels, the control mechanism, the seed box, and the ridging mechanism are mounted in turn from one end to the other end of the frame. A photoelectric sensor of an active infrared intrusion detector is adopted to dynamically monitor the presence of the seed potatoes on a seed-discharge spoon in a conveying process. Seeds are replanted with the control mechanism when the seeds are sowed with an empty spoon.