Traditional Culture Encyclopedia - Weather inquiry - What should I pay attention to when spraying pesticides in low temperature weather?
What should I pay attention to when spraying pesticides in low temperature weather?
2. Appropriate increase of pesticide dosage in low temperature season. Under the guidance of professionals, the dosage should be appropriately increased to improve the concentration of liquid medicine, but it should not exceed the "safe high concentration" (that is, the maximum allowable dose without drug harm).
3. When the application temperature is high in sunny days and high temperatures, the range of activities and respiratory intensity of pests will increase, and the food intake will also increase. At this time, the application of pesticides will help improve the control effect.
4. Improve the application methods for preventing and controlling greenhouse crop diseases and insect pests in winter and spring, and try to use smoke method or dust method; If spraying method is adopted, it is necessary to appropriately reduce the number of prevention and control times and spray the amount of liquid medicine to prevent humidity in the shed.
5. Appropriately extend the safety interval. In the low temperature season, the degradation speed of pesticides is slow and the residue time in crops is relatively long. Therefore, it is necessary to appropriately extend the number of days between the last application of pesticides and crop harvest (that is, the safe interval) to ensure food safety.
- Previous article:Observation diary of third grade in primary school
- Next article:Painting in summer and solar terms
- Related articles
- The weather in Zhuhai in recent days
- Causes of hail formation
- How to review comprehensive basic knowledge
- What does hot stand for?
- It has been raining in Beijing recently. How long will this last?
- Translation of diary of a trip to Baiyue Mountain
- How can 0pp0 mobile phone enable weather disabling in application management?
- It's getting colder and colder. How to keep warm?
- The monsoon climate in China can easily bring all kinds of disastrous weather. Since the autumn of 2009, Yunnan, Guangxi, Guizhou and other places in southwest China have suffered from a once-in-a-cen
- Fashion hot mom really knows how to wear it Black suspender tops and personalized pants show elegant and intellectual beauty. what do you think?