1. Acidity: first of all, it is important to ensure that the soil is acidic, which is helpful for growth. The pH value should not be too large, otherwise it will affect the growth of plants, cause weak growth, and cause death in serious cases.
2. Air permeability: it is also necessary to ensure the permeability. If it grows in the clay heavy soil, it is difficult for the root system to adapt, easy to breathe, affect the function of absorbing water and nutrients, and it is difficult for the plant to grow..
3. Soft: the soil shall be as soft as possible to ensure the deep and loose, which is conducive to the normal growth of the root system.
4. Nutrition: rich nutrients are also one of the conditions, which can supplement enough nutrition, which contains a large amount of humus, to supply the later growth of plants.
At present, the main materials for soil preparation are saprophytic soil, river sand, peat soil, furnace ash, pine needle soil, bone meal, brick and tile and charcoal fragment, among which forest saprophytic soil is the most ideal soil, close to the original environment. The main common soil is forest rotten leaf soil, accounting for 6 /10. Add one tenth of pine needles, slag, old soil, and then add a little charcoal and bone powder.
