The spray sprays the liquid medicine through the nozzle. The range of liquid medicine spraying and the size of liquid drops depend on the model of the spray tablet. The spray nozzle model determines the diameter of the water hole. Currently, there are two commonly used types: 1.1 meters and 1.5 millimeters, as well as slightly smaller or larger ones.

The spray nozzle model has a significant impact on the safety of operators. The spray area of the small hole spray tablet is small and the droplets are fine, so it is easy to control the spraying direction, so the pesticide applicators are less polluted by pesticides. The large hole spray film is opposite. The spray area is large, the droplets are thick, and the fan fields are widely scattered. The pesticide applicators are much more seriously polluted. Some people have determined that using small hole spray tablets can reduce drug contamination by more than 80 intestines compared to using large hole spray tablets. In addition, the small hole spray has less water output and can reduce the dosage by 30-9096. However, due to different stages of crop growth, it is sometimes necessary to choose large hole spray. For example, during the bud and boll stage of cotton, when the plant height is lush and the leaves are lush, only by using large hole sprays and spraying more liquid medicine can it be beneficial to concentrate and eliminate pests. During the cotton seedling stage, using small hole spray tablets saves medication and has high efficacy. Therefore, the selection of spray nozzle models should be based on the different needs of disease and pest control, while operational safety should be well understood and protection should be strengthened.

During the use of the spray, the nozzle is often blocked, which brings a lot of trouble to the sprayer, and also causes serious pollution and even poisoning of the liquid medicine because of the urgency to remove the fault. Therefore, preventive measures should be taken as much as possible to prevent potential problems before they occur.

Before use, disassemble the components and remove metal rust. Before loading the liquid, rinse and test spray with clean water, and promptly remove any blockages.

When dispensing, it is important to prevent impurities in the diluted water from mixing with the medication solution. You can use gauze to first secrete the extracted spare water. Also, pay attention to preventing debris from directly falling into the medicine bucket. The single tube spray is equipped with a separate medicine bucket, and a wooden cover should be added.

When resting during breaks or dispensing again, the spray bar should be placed on the ground to prevent the nozzle from facing loose soil to prevent soil particles from blocking the spray hole. It's best to try hanging up the spray bar.