Detailed explanation of potting mix formulas, master the correct mixing methods

The following formulas are provided for reference only. (1) Mountain soil 30%, crushed red brick (2-4 mm) 40%, decomposed sawdust and rice husk 5% each, garden soil 20%. (2) Orchid mycorrhizal soil 30%, humus soil 30%, crushed red brick 30%, sawdust 10%. (3) Emei Xiantu 30%, bamboo root soil 30%, humus soil 15%, crushed red brick or fired soil 20%, sawdust 5%. (4) Emei Xiantu 40%, crushed red brick 40%, sawdust and rice husk 5% each, garden soil 10%. All the above potting mixes must be sterilized with steam before use.