| abstract |
(57) [Abstract] [Problem] To effectively utilize the water retention, air permeability, and durability of woody bark, reduce the bulk and reduce the cost for transportation and storage, and to the natural environment at the time of disposal It is an object of the present invention to provide a medium for plant cultivation and a method for producing the same, which are preferable from the viewpoint of maintaining the environment by reducing the load on the environment. SOLUTION: A wood-based bark is crushed to a predetermined size to be a raw material, and the raw material is subjected to high-density compression molding by a drying, compression and heating molding step, and a block-shaped medium which expands by containing water when used is obtained. The cultivation medium and the method for producing the same are used as basic means. The block-shaped medium is in the form of a plate, a pot, or a half cylinder. Fiber length at the time of crushing raw material is 10cm Hereinafter, drying is performed so that the particle size is 1 cm or less and the water content is 30% or less. The heating temperature range at the time of compression heat molding of this raw material is 70 ° C. to 220 ° C., and the pressing range is 10 to 5 0 kg / cm 2 . |