<；P>；PROBLEM TO BE SOLVED: To prevent interference of a ground contact type power generator for operating a seeding apparatus for a seed hopper with rear wheels of a tractor in a direct seeder. <；P>；SOLUTION: The ground contact type power generator D is arranged between a pair of rubber crawlers K installed at the rear of the tractor T for pulling an un-plowing direct seeder A which is one example of the direct seeder. The pair of ground contact driving wheels 44 constituting the ground contact type power generator D are arranged so as not to interfere with either of a connector J for connecting the tractor T to the un-plowing direct seeder A and a universal joint 22 for transmitting power of the tractor T. Thereby, torque produced when the pair of the ground contact driving wheels 44 are urged, made to contact the ground in a field G, driven and rotated, is transmitted through the universal joint 22 to a sprocket wheel shaft 47 and further from the sprocket wheel shaft 47 through a sprocket wheel type transmission unit U to a seed delivery shaft 56 of the seed hopper H. As a result, the seed delivery shaft 56 of the seed hopper H is driven and rotated. <；P>；COPYRIGHT: (C)2007,JPO&INPIT
