1. Dry storage: Place the remaining soil in the sun to dry or use a low-temperature oven to dry, ensuring that the soil is completely dry. Afterwards, pack the dry soil into a sealed bag or container to avoid moisture regain caused by air humidity.
2. Refrigeration or freezing: If the soil contains a lot of organic matter or microorganisms and you want to maintain their activity, you can choose refrigeration or freezing storage. Put the soil into a well sealed plastic bag or container and store it in the refrigerator or freezer compartment. Note that frozen soil should be thawed and mixed evenly before use.
3. Adding preservatives: For soils that require long-term storage and are not easily dried or refrigerated, it is recommended to consider adding an appropriate amount of preservatives. Use the product correctly according to the instructions, and then seal and store it. However, this method may not be suitable for all types of soil or horticultural use and should be carefully selected.