| 摘要 |
<p>A plant growth medium is formed by granulating tree barks, heating the granular bark so formed to kill heat labile plant pathogens, chemically treating the granular bark with an aqueous solution of an alkali material to form at least a pH neutral outer layer on the granules and optionally impregnating the granules with trace elements, plant nutrients and fungicides. The heated, chemically treated bark granules are then immersed in cold water to cause separation of sapwood from the exogenous bark portion. The separated exogenous bark portion is then dried and bagged as a sterile plant growth medium particularly suited to aerophytes.</p> |
