Advantages and disadvantages of solid substrate steam disinfection, drug disinfection and solar disinfection.

The advantages and disadvantages of solid substrate steam disinfection, drug disinfection and solar disinfection are as follows.

1, where steam disinfection is available, the used substrate can be put into the disinfection box. When the production area is large, the substrate can be piled up to 20 cm high, and the length depends on the terrain. All substrates are covered with waterproof and high temperature resistant cloth. After steam is introduced, bacteria can be killed by disinfection at 70-90 degrees Celsius 1 hour, with good effect and relative safety, but the disadvantage is high cost.

2. Disinfection of methyl bromide. Methyl bromide fumigation is a very effective disinfection method. However, due to the toxicity of methyl bromide, which is a strong carcinogen, the operating procedures must be strictly observed, and 2% chloropicrin or tear gas should be added to methyl bromide to check whether it leaks into the surrounding environment.

3. Solar disinfection steam disinfection is safer but the cost is higher, and chemical disinfection is cheaper but the safety is worse, and it will pollute the surrounding environment. Solar energy is a cheap, safe, simple and practical soil disinfection method widely used in greenhouse cultivation in recent years, and can also be used to disinfect soilless culture substrates.