PROBLEM TO BE SOLVED: To improve the strength of a culture medium material including plant fibers as the main material to prevent the culture medium material from falling apart, and to provide a culture medium material having suitable characteristics for machine planting.SOLUTION: A culture medium material 1 which is laid on a tray for seedling raising 3 comprises multiple coconut husk fine fibers 5, coconut husk grains 6, and coconut husk powders 7 which assemble three-dimensionally without directionality, and it is compressed into a thin tabular shape for molding.COPYRIGHT: (C)2015,JPO&INPIT【課題】植物繊維を主材とする培地材が散けないように強度を向上させること、及び機械植えに好適な特性を持つ培地材を提供する。【解決手段】育苗トレイ3に敷設される培地材1を、立体的に方向性なく集合した多数のヤシガラ細繊維5、ヤシガラ粒6、及びヤシガラ粉末7とで構成し、薄板状に圧縮して成形する。【選択図】図1
