Abstract: Aiming to explore the best substrate for the growth of container seedlings of Machilus breviflora, the growth of container seedlings of Machilus breviflora by taking yellow heart soil, peat soil, coconut bran, perlite and organic fertilizer as experimental materials and combining them into ten kinds of mixed substrates through different matrix ratios were studied. The results showed that different matrix ratios had obvious effects on the growth, biomass and leaf chlorophyll SPAD value of Machilus breviflora. The results of principal component analysis showed that the comprehensive score of Machilus breviflora was the highest with the best growth when the matrix ratio was 15% yellow core soil + 50% peat soil + 20% coconut bran + 10% perlite + 5% organic fertilizer.

Key words: Machilus breviflora, container seedlings, matrix ratio, principal component analysis