| 摘要 |
PROBLEM TO BE SOLVED: To provide planting material inexpensively mass-producible and having a long period of use so as to remarkably reduce running costs. SOLUTION: The planting material for plant cultivation is obtained by aggregating waste fibers into three-dimensional shapes and being connected like a string to form a fiber string. Therein the fiber string has 2-30 mm average thickness under a non-pressed condition. COPYRIGHT: (C)2005,JPO&NCIPI
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