Our greenhouse supplier recommends a coconut-fiber substratum for the new orchid shipment.

我們的溫室供應商建議新到貨的蘭花使用椰纖基質。

The lab report confirmed that the mushrooms grew best on a straw substratum.

實驗室報告證實，這批菇類在稻草基質上生長得最好。

Please order more substratum before the nursery opens its spring sales season next month.

請在苗圃下個月春季開賣前多訂一些基質。