In agricultural production, fog cannons can be used for farmland irrigation. By spraying water evenly on crops, they achieve the goal of water-saving irrigation. Meanwhile, during hot weather, fog cannons can also be used to spray water to cool down crops, reducing the damage caused by high temperatures to them. In addition, the fog cannon can also be used for the prevention and control of agricultural pests and diseases. By mixing pesticides with water and spraying them through the fog cannon, the pesticides can be more evenly distributed on the surface of crops, thereby enhancing the effectiveness of pest and disease control.