A first machine of this tree planting system has: a cultivation device that cultivates soil in which a plant for tree planting is planted; a first traveling device that travels along with the cultivation device; and a cultivation location detection device that, while the cultivation device is traveling along with the first traveling device and cultivating soil, determines a plurality of actual cultivation locations which are locations corresponding to the location of the cultivation device, and outputs said locations. A management device of this tree planting system stores a plurality of actual cultivation locations. A second machine of this tree planting system has: a planting device that plants a plant in the soil cultivated by the cultivation device; a second traveling device that travels along with the planting device; a planting device location detection device that determines the location of the planting device; and a control device that controls the location of the planting device on the basis of a plurality of actual cultivation locations acquired from the management device and a location of the planting device determined by the planting device location detection device at the point in time when the plant is planted.L'invention concerne une première machine de ce système de plantation d'arbre qui comprend : un dispositif de culture qui cultive le sol dans lequel une plante de plantation d'arbre est plantée ; un premier dispositif de déplacement qui se déplace conjointement avec le dispositif de culture ; et un dispositif de détection d'emplacement de culture qui, tandis que le dispositif de culture se déplace conjointement avec le premier dispositif de déplacement et cultive le sol, détermine une pluralité d'emplacements de culture réels qui sont des emplacements correspondant à l'emplacement du dispositif de culture, et délivre lesdits emplacements. Un dispositif de gestion de ce système de plantation d'arbre stocke une pluralité d'emplacements de culture r