简介：Thisarticle,bycomparingthebasicconceptsofsubstrateandsoil,theircompositionofsubstanceandmethodsofmeasuringtheindexesofphysicalandchemicalproperties,analyzesandresearcheswaysofchoosingsubstrateforcultivationwithfacilities.Itindicatesthatthenormalphysicalandchemicalindexesofevaluatingasubstratearebulkdensity,totalporosity,non-capillaryporosity,ratioofbigporositytosmallporosity,thepHandtheelectricalconductivity(EC)valueofthesubstrate.By...
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