Effects of Organic Cultivation Substrate Made from Municipal Sewage Sludge on the Growth of Salvia splendens and Impatiens walleriana
Taking the sludge products treated with advanced anaerobic digestion (thermal hydrolysis+anaerobic digestion) as the research ob-ject,five organic cultivation substrates were prepared by compounding different proportions of sludge products ( volume ratio of 30％,40％, 50％,60％,70％) with coconut bran,perlite and original soil. The effects of these five cultivation substrates on the plant height,crown width, and biomass of Salvia splendens and Impatiens walleriana were studied,the organic cultivation substrate developed under the combination of dif-ferent types of raw materials and different ratios was most beneficial for the growth of Salvia splendens and Impatiens walleriana plants.The re-sults showed that the crown width,plant height and biomass of Salvia splendens and Impatiens walleriana plants treated with S3( sludge∶coconut bran∶perlite∶native soil=5∶3∶1∶1) were higher than those of other treatments during the growth period,indicating that the substrate ratio of S3 treatment was the most favorable for the growth of these two types of flowers.
万方数据
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