These come in a variety of formulations with the composted bark being the best.

这些植料的配方多种多样，其中混合树皮是最好的。

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Composted bagasse and pine bark were mixed with yellow soil and perlite to make up light medium for eucalyptus cuttings.

本文研究了以甘蔗渣和树皮等，结合黄心土和珍珠岩作为桉树扦插的轻型基质。

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