The method is to put the nutrient soil needed by the plant into a pressure cooker or a steamer for heating, generally heating to 60 to 100 ℃, and the time is about 30 to 60 minutes. It should be noted that the heating time should not be too long, or it will lead to the death of beneficial microorganisms that decompose fertilizer and affect the fertility of the soil.
The method is to put the prepared fertilizer on the clean concrete floor, iron sheet or wooden board, and lay a thin layer on it. After 3 to 15 days of exposure in the sun, it can kill a large number of bacteria spores and hyphae in the soil, as well as nematodes, pests, etc. The advantage of this method is that it is easy to operate, but its disadvantage is not thorough enough.
The method is to put the nutritive soil into the pot, pour in the water and start boiling, take it out after about 30 to 60 minutes, filter the water and dry it to a moderate humidity.
Put a small amount of soil to be planted into the iron plate or pot, burn it with fire, wait until the soil is dry and continue to burn for half an hour to an hour, then the bacteria and pests in the soil will be eliminated.
