Abstract:

The experiment performed an analysis in the physical and chemical characteristics of 6 substrates, revealing that when the ratio of peat, perlite and vermiculite was 3:2:1 or 7:2:1, the overall porosity, gas porosity and water holding capacity of mixing substrates were good, and the vapor was appropriate, which meant that the two types appeared strengths in looseness, air permeability, and water holding capacity. Among the 6 substrates, peat's highest germination percentage was 89%. When the ratio of peat, perlite and vermiculite was 3:2:1, the mixing substrates had the greatest impact on Eustoma grandiflorum 's growing characters like stub height, stem thickness, leaf length, taproot length, root-shoot ratio and root system. When the ratio of peat, pertilite and vermiculite was 7:2:1, the mixing substrates had the highest seedling percentage of 81.4%, and the following was that of 3:2:1, whose seedling percentage was 78.5%. The lowest seedling percentage was 27.4% from the ratio 1:1:1.