1. Clearly control the subject and apply the drug symptomatically. Because there are many varieties of pesticides and their characteristics are different. There are also many kinds of crop diseases, insects, grasses and mice that are controlled and the nature of the hazards are different. Therefore, the selection of pesticide species must fully consider the object of control, the type of crops, and their growing period. Symptomatic application of pesticides, such as pesticides can not be used to control the disease. If you misuse or misuse pesticides, you will often fail to control them. 2. Grasp the spraying period and apply pesticides in a timely manner. Each disease, insect, and weed has its best period of prevention and treatment. Therefore, the time of choosing the application should consider the development period of diseases, insects, and weeds, the progress of crops, and the quality of pesticides, in order to achieve timely application of medicines and improve the control effect. At the same time, care should be taken to avoid the sensitive period of hostile pesticides as much as possible. 3. Choose the right application time and quantity. The application of pesticides is generally selected in the morning or evening on a sunny day. Do not spray pesticides in rainy or windy weather. The amount of pesticides should be based on the quality of pesticides, dosage form and environmental factors, according to the recommended dosage of the commodity description to calculate the dosage of the field, can not be arbitrarily increased or decreased, otherwise it will cause crop phytotoxicity or affect the control effect. 4. Scientific preparation of liquid medicine, pay attention to do a good job mix. Before preparing pesticides, read the instructions carefully and prepare them as required. At the same time, pay attention to do a good job in the compounding of pesticides to improve the control effect, expand the scope of control, reduce costs, and enhance the safety of people and livestock. However, it is important not to mix pesticides that cannot be mixed together. This will affect the control effect. 5. Select the application method to ensure the quality of application. Various dosage forms of pesticides have their specific use equipment and methods. Therefore, when applying pesticides, pesticides should be selected according to their dosage forms and the types of pests, grasses, rodents, and sites of damage, in order to ensure the correct application methods and equipment. The pesticide is evenly distributed on the surface of crops or pests, achieving scientific and efficient control. 6. Alternate or mixed application to prevent drug resistance. Continuous use of a pesticide for a disease, insect, or rodent in a region for a long period of time can cause disease, insects, and mice to develop drug resistance, resulting in a significant reduction in efficacy or even ineffectiveness. In this regard, management should be strengthened to prevent the occurrence of drug resistance by adopting measures such as rotating drugs, mixing drugs, and intermittent medications. China Agricultural Network Editor
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