| 摘要 |
New prod. comprises a compressed nutritive substrate with inclusion of seeds. A soln. of magnesium sulphate, potassium nitrate, monobasic potassium phosphate, calcium nitrate, zinc sulphate and about 2% of copper is incorporated into enriched peat (with added silica, marl, chalk, perlite or vermiculite) and compressed at 3 or 4 bars.
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