| 摘要 |
<p>The invention relates to a growing medium for forming a growing medium layer within a hydroponic growing system for growing grass in a sports field. The growing medium comprises particles of pine bark that have immature fractions of bark in the form of cellulose, tannins and resins separated therefrom. The pine bark particles when compacted to form a growing medium layer are extremely stable, while providing good drainage qualities and general conditions for the development of the grass roots of grass grown within the medium layer.</p> |
