关键词: 多穗石柯, 基质, 扦插, 理化性质

Abstract: In order to screen out the suitable cutting medium of Lithocarpus polystachyus, the semi lignified branches were used as cuttings. And five materials (garden soil, yellow heart soil, peat soil, river sand and coconut bran) were select to set up 8 matrix formulations, and the bulk density, total porosity, pH and electrical conductivity of each matrix were measured to explore the effects of different substrates on the cutting survival rate, root number and root length of L. polystachyus. The results showed that the physical and chemical properties of different media were different, and there were significant differences in the survival rate, root number and root length. The survival rate, root number and root length were significantly correlated with the physicochemical properties of the substrate. The substrate with high total porosity was not conducive to the survival and root growth of L. polystachyus, while the substrate with low pH value and electrical conductivity had higher survival rate; garden soil: yellow heart soil: river sand (1:1:1) was the most suitable medium for cutting propagation, and the cutting survival rate was the highest (86.75%), followed by yellow heart soil: river sand (2:1).

Key words: Lithocarpus polystachyus, substrates, cutting, physical and chemical properties