The characteristic of fracture and pulling force under different varieties of tobacco pot seedling were analyzed in the paper, The experimental researches show that the minimum pulling force far smaller then the fracture force in the plant period, it demonstrate the possibility of mechanical pulling up seedling. Analysis of the characteristics of clam- ping seedling ,clamping soil and auto arrange seedling method shows that manipulator clamping seedling method is hand to be adopted as the manipulator can not be properly located, manipulator clamping soil method not only simple but also useful,...
