| 【Objective】The effect of the substrate composed of garden waste composting products in Guangdong
on the growth of flowers was studied, and the possibility of composting products as garden plant cultivation substrate was
discussed.【Method】The physical and chemical properties of the substrate composed of different proportion of compost
and the growth characteristics of two kinds of herbaceous flower were determined by using Impatiens wallerana and Petunia
hybrida as research materials.【Result】The substrate composed of garden waste composting products has low bulk density,
high total porosity, high contents of organic matter, nitrogen, phosphorus and potassium. Among them, the available nitrogen,
phosphorus and potassium in the pure compost were 686.80, 453.20 and 10 120.90 mg/kg, respectively. Therefore, such
substrate was an ideal substrate for flower cultivation. The substrate composed of compost can promote the root growth,
increase chlorophyll content of leaves above ground, promote leaf growth, and promote tillering of flower branches, increase
crown width and plant height, and then increase dry and fresh weight and number of flowers of I. wallerana and P. hybrida.According to the analysis of subject function method, the most suitable substrate for the growth of I. wallerana plant was
obtained by pure compost, with the function value of 0.73. While the most suitable substrate for the growth of P. hybrida was
compost of commercially cultivation substrate (substrate ∶ compost7 ∶ 3), with its function value of 0.97.【Conclusion】
The substrate composed of garden waste composting products can be used as substrate for the cultivation of I. wallerana and P.
hybrida. |
