1、 Soil conditions

1. Acidity: first of all, we should ensure that the soil is acidic, which is a very important condition, 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 death in serious cases

2. Permeability: it is also necessary to ensure permeability. If it grows in sticky soil, the root system is difficult to adapt and it is easy to have difficulty breathing, which affects the function of absorbing water and nutrients and is difficult to supply plant growth

3. The soil should be as soft and loose as possible to ensure the normal growth of roots

4. Nutrition: rich nutrition is also one of the conditions. It can supplement enough nutrition. It contains a lot of humus for plant growth in the later stage

2、 Soil preparation scheme

At present, the main materials for soil preparation are rotten leaf soil, river sand, peat soil, furnace ash, pine needle soil, broken bone powder, brick and tile and charcoal fragments, among which forest rotten leaf soil is the most ideal soil, which is relatively close to the original environment. The main common soil is forest rotten leaf soil, accounting for 6 / 10. Add one tenth of each pine needle, slag and old soil, and then add a little carbon dust and bone meal