First, the method of use 1. Seed treatment: The ozone gas is introduced into clean water and continuously stirred. After 10 minutes, an ozone solution is prepared. Pour the seeds into it for 15-20 minutes to kill the virus, germs and eggs on the surface of the seeds. 2, greenhouse greenhouse pest control (1) Sterilization of smoked shed: 10 days before planting can be combined with high temperature shacks to use ozone generator to concentrate ozone in the shed. The application time is not less than 2 hours. (2) Controlling seedbed pests and diseases. First seal the seedbed, apply for 1 minute every 10 square meters, and fumigate for 10 minutes, then ventilate for another 30 minutes. (3) Prevention and control of pests and diseases after planting vegetables: After planting and slowing down the seedlings, ozone is continuously applied to the greenhouse for 7 to 10 minutes, then fumigate for 15 to 20 minutes, and then ventilated for 30 minutes. The pest-free sheds are applied once every 5 to 7 days, 5 times in a row, and 5 minutes after each 2-3 times of application, until each acre increases to 25 minutes. The fumigation time is also increased by 5 to 10 minutes every 2~3 times. It has been proved by experiments that ozone has good effects on the control of tomato gray mold, leaf mold, early blight, late blight, cucumber downy mildew, blight, etc., as well as greenhouse whitefly, leaf miner, aphid and other pests. However, for the pests in the greenhouse soil, the amount of ozone gas infiltrated into the soil is too small, and the concentration is too low, so it has no effect. Second, matters needing attention 1. Reasonable determination of the amount of application and fumigation time: The amount of ozone applied and the time of closed fumigation should be adjusted according to different crops and their growth period. Generally, crops in adult stage are more adaptable to ozone than seedling crops. In the production, if the amount of ozone is too large or the room fumigation time is too long, the light will cause the leaves and flowers poisoning of the greenhouse vegetables to dry up, and the heavy ones will cause the plants to die. As the plant grows, the amount of application and fumigation time can be gradually increased to achieve the purpose of controlling pests and diseases without harming vegetable crops. When releasing, try to ensure uniformity, and the air jet can not directly face the vegetables, it should be 0.8~1 meters away from the vegetable plants. After the fumigation time arrives, it should be ventilated in time. The general ventilation time should not be less than 30 minutes. When the shed is fumigation, people and animals are strictly prevented from entering, so as to avoid poisoning or other adverse reactions. 2. Temperature and humidity control: When the ozone is applied, the indoor temperature should be kept within the range of 10~30°C, and the control effect will be better under the condition of high air humidity. 3, use the appropriate power supply: ozone generators generally use lighting power. Laminated Glass,Laminated Glass Window,Pvb Laminated Glass,Tempered Glass Windows Huaian Hongrui Glass Co.,Ltd , https://www.hongruiglass.com