Ozone is a broad spectrum, efficient, rapid fungicide, it can quickly kill a variety of germs, viruses and microorganisms, but also has a strong degradation of pesticides and organic poisons. After the completion of its sterilization and disinfection mission, ozone is reduced to oxygen about half an hour later, and can play a role in promoting plant growth.
Ozone supply in the shed is carried out at night, unmanned, fully enclosed and under high humidity conditions to ensure personnel safety and maintain adequate ozone concentration. Open doors and Windows for ventilation after disinfection.
The sterilization effect of ozone in greenhouses and greenhouses is related to many factors such as the model of ozone generator itself, ozone concentration, indoor temperature and humidity, light, fertilizer and water management, and crop varieties. Therefore, the use of ozone can be adjusted according to the type of vegetables, growth period, the type and severity of diseases and pests, and the characteristics of the climate. Studies have shown that the increase of humidity and the decrease of temperature can enhance the disinfection effect of ozone, and the microbial cell membrane becomes thinner under high humidity, which is easy to be destroyed by ozone, and can play a better control effect. The ambient humidity of the application of ozone should be above 60%, and when it is lower than 45%, ozone has almost no bactericidal effect on microorganisms in the air, and the higher the humidity, the better the bactericidal effect. In general, spraying ozone water is better than giving ozone gas to prevent disease, and when ozone dissolves in water, it has a stronger and faster sterilization effect. For example, repeated spraying with ozone water before the occurrence of tomato leaf mold and gray mold has the effect of preventing the incidence and preventing the spread of the disease. After the onset of the disease, in addition to ozone gas, Japan also supplemented by spraying 0.3-0.5mg/L of ozone water, so that through the combination of oxygen liquid, can improve the bactericidal effect.
Chinese Academy of Sciences greenhouse vegetable base using 7g/h ozone generator, compared with the use of conventional pesticides greenhouses, the results show that the use of ozone treatment of greenhouses, vegetables can be protected from pesticide pollution, plant growth and development significantly enhanced, high flowering and fruit rate, early fruit maturity, yield increased by 20%-30%, cost reduced by 90%. Japan reported that ozone can effectively prevent and control the fungal disease of tomatoes, melons and cucumbers in the warm shed, and can remove the fungi and aphids of eggplant, mushroom head, potted flowers, etc., and can also promote plant growth. Ozone-soaked seeds can be sterilized.
