| 摘要 |
A method of growing a plant, which comprises growing the plant mat consisting of an open-cell polyurethane foam comrising from 10 to 50% by weight of ethyleneoxy residues and having a density in the range of from 15 to 30 kilogrammes per cubic metre and a mean number of cells per centimetre in the range of from 10 to 25, a polyurethane foam for use in the method, and a process for preparing the polyurethane foam. |
