Fuente: WIPO "tobacco agriculture" The utility model discloses a manual formula seedling cave seeder with gradation function, set up accuse seed valve in the bottom in seed storehouse, lower part at accuse seed valve sets up branch granulation mechanism, set up instructor in broadcasting's pipe on the play seed mouth of minute granulation mechanism, well upper portion in the seed storehouse sets up the handle, setting up downwardlyextending to the actuating mechanism who divides granulation mechanism lower part on hand, actuating mechanism connects gradually accuse seed valve, divide granulation mechanism make actuating mechanism respectively with accuse seed valve, the movable fit of granulation mechanism divides, dividing granulation mechanism to include sorting disc, selecting separately the shell, sorting disc is lastto be joined in marriage right circular structure with it through the coaxial setting of pivot and selects separately the shell, and sorting disc with select separately shell clearance fit, make the pivot drive sorting disc at sorting shell internal rotation, the circumference is all established the several and is selected the seed groove on sorting disc, the top of sorting shell sets up into seedmouth, the bottom sets up out the seed mouth. The utility model discloses fixed, the easy control of quantity avoids the seed extravagant during the seeding, and the seeding cost is practiced thriftto the very big seeding efficiency that improves.