Abstract: A seedling-cutting apparatus includes a pair of arms that is to nip a portion of a stem of a seedling for grafting and that can be opened and closed and a blade that is provided so as to be capable of reciprocating relative to the portion of the stem. At least one of the pair of arms includes a through hole or a cutout that penetrates a portion of the arms along a direction in which the blade reciprocates. At least a portion of the through hole or the cutout faces the portion of the stem and at least a portion of the blade moves through the through hole or the cutout.

Abstract: A sapling growing apparatus includes: a carriage including racks in eight tiers and traveling along a circulation path in indoor space externally shielded from light and externally heat insulated; an LED mounted on the carriage and emitting light to the multiple saplings in a tray on the racks; a watering unit arranged in the indoor space and supplying water to the saplings in the tray; a water vapor generator and a cold air flow generator that creates given temperature and humidity environment in the indoor space; and an illumination management unit that creates light environment distinguishing between day and night artificially by turning on and off the LED. A large number of saplings are grown uniformly on a large scale while being moved in a circular pattern under the artificial growing environment.

Abstract: A seedling-cutting apparatus includes a pair of arms that is to nip a portion of a stem of a seedling for grafting and that can be opened and closed and a blade that is provided so as to be capable of reciprocating relative to the portion of the stem. At least one of the pair of arms includes a through hole or a cutout that penetrates a portion of the arms along a direction in which the blade reciprocates. At least a portion of the through hole or the cutout faces the portion of the stem and at least a portion of the blade moves through the through hole or the cutout.

Abstract: A grafting method for uniting a scion to a stock includes forming conical projection on either a lower portion of a scion or an upper portion of a stock, forming a conical recess on either a lower portion of a scion or an upper portion of a stock, and joining the conical projection in the conical recess to unite the scion to the stock. A grafting apparatus includes a holder for holding either a scion or a stock, a die member having a conical hole into which either a scion or a stock is inserted, a cutting blade member arranged and movable along a generatrix of the conical hole, a ultrasonic drive device for moving the cutting blade member upward and downward at a ultrasonic high speed, a rotating drive device for rendering a relative rotation between the holder and the cutting blade member, and an elevating drive device for rendering a relative movement between the holder and the die member.

Abstract: A grafting method for uniting a scion to a stock includes forming a conical projection on either a lower portion of a scion or an upper portion of a stock, forming a conical recess on either a lower portion of a scion or an upper portion of a stock, and joining the conical projection in the conical recess to unite the scion to the stock. A grafting apparatus includes a holder for holding either a scion or a stock, a die member having a conical hole into which either a scion or a stock is inserted, a cutting blade member arranged and movable along a generatrix of the conical hole, a ultrasonic drive device for moving the cutting blade member upward and downward at a ultrasonic high speed, a rotating drive device for rendering a relative rotation between the holder and the cutting blade member, and an elevating drive device for rendering a relative movement between the holder and the die member.