PURPOSE: A sweet potato planting apparatus installed in a sweet potato planting specialized furrow maker is provided to accurately plant browse in a ridging part by making the browse be supported by a brush not to be sagged even in an erect state while rotating in a gathering clamp of a rotating board. CONSTITUTION: A multifunctional Korean-paper fiber production method with barks of a hinoki cypress and leaf extracts includes the following steps. A mixed stuff of the mulberry pulp and the hinoki cypress extracts is produced by mixing a functional mulberry pulp stuff in which a 3 weight% of corn powder which is finely grinded with a particle size of 320 meshes and a 2 weight% of germanium is mixed in a 60 weight% of mulberry pulps; and the hinoki cypress extracts. The hinoki cypress extracts are produced by the following steps; washed barks of the hinoki cypress, which works as a natural rice straw based bast fiber, is cooked for two hours at a temperature of 80 degreeC placing in a heating container; the pro
