Effects of different ratios of organic substrate on growth of scindapsus seedling

In order to explore new ways of using agricultural waste matrix，the compound substrate of banana pineapple waste leaf compost and coconut bran was prepared according to different proportions，and the effects of different substrates with different physical and chemical properties and nutrient content on the growth of scindapsus seedling were studied. The results showed that when the compost and coconut chaff ratio of the substrate was （4-8） ∶（2-6），the volume weight was 0.33-0.47 g/cm3，total porosity，aeration porosity，and water-holding porosity were higher 80%，17% and 60%，respectively，and pH and EC were 6.02-6.93 and 0.4-1.6 mS/cm， respectively. The nutrient content increased with the proportion of compost addition. When the organic matter content was 75.8%-78.8%，the available nitrogen，phosphorus and potassium were 7.3-7.6 g/kg，0.32-0.37 g/kg and 7.8-8.3 g/kg，respectively. Comparative test on the growth of scindapsus seedling showed that the best substrate proportion was 7∶3（ volume ratio） of compost and coconut bran，and the number of new leaf，root and root weight were 18.03， 14.86 and 2.01 g，respectively. Compared with control group，total root length，root surface area and root volume of the treated group increased by 57.98 cm，22.59 cm2 and 0.67 cm3. These results indicated that the formula matrix could be used as organic substrates of scindapsus seedling.