| 摘要 |
A covering element for a hydroponic cultivation block which is used for cultivating products, such as for example roses, is provided with a first opening for the stalk or stem of the cultivated product and a second opening for feeding a nutrient liquid to the hydrophonic cultivation block. The diameter of the first opening can be varied between a starting diameter and an end diameter. The starting diameter approximately corresponds to the diameter of the young stalk or stem of the cultivated product. |
