A simple method of disinfection of flower soil

1. Daylight disinfection: put the prepared culture soil on clean concrete floor, wood or iron sheet, spread out thinly and insolate for 3-15 days, it can kill a large number of germ spores, hyphae and eggs, pests and nematodes. Although disinfection with this method is not complete, it is the most convenient.

2, steam disinfection: put the nutritious soil into a steamer or pressure cooker and steam it to 60-100 ℃ for 30-60 minutes (heating time should not be too long, so as not to kill beneficial microorganisms that can decompose fertilizer, affecting soil fertilizer efficiency), which can kill most bacteria, fungi, nematodes and insects, and make most weed seeds lose vitality.

3. Boil and disinfect: pour the culture soil into the pot, boil it with water for 30-60 minutes, then filter the water and dry it to a moderate humidity.

4. Fire disinfection: a small amount of soil used in the nursery bed or cutting and sowing can be put into an iron pot or on an iron plate to burn for 0.5-1 hour after the soil particles become dry, which can completely eliminate the diseases and insects in the soil.

5. Chemical treatment: different chemicals can be used in the family to fumigate the soil, that is, after the soil is screened, a layer of soil is sprayed with chemicals, then a layer of soil is sprayed again, and finally covered with plastic film and sealed for 5-7 days. then open for ventilation for 3-5 days. The commonly used agents are formaldehyde, zinc benzoate, carbendazim, sulfur powder and so on. Fan Yajing