First, the right medicine. Accurately distinguish between physiological diseases and invasive diseases, and confirm the types of pests and diseases that occur.
Second, timely medication. Use drugs to prevent and kill eggs, mites or larvae when the pests and diseases occur. In the period of occurrence, it is necessary to use the medicine in time to control the pests and diseases in the stage of spotting and prevent the spread.
Third, choose the type of medicine. In rainy and snowy weather, dust is generally used to reduce the humidity in the shed.
Fourth, even the anti-drug change. After the occurrence of pests and diseases, it is generally necessary to continuously control 2 to 3 times, each interval of 7-8 days. In the process of prevention and control, pesticides are used in rotation to prevent the development of resistance to pests and diseases.
Fifth, the dose is strict. Strictly follow the use concentration and dosage of the drug in the manual. Spraying and spraying in the shed must be comprehensive and uniform. The spray of the drug is generally carried out in the morning to ventilate the temperature inside the shed and reduce the humidity in the shed. Aerosols are generally used after closing the greenhouse in the evening, and attention should be paid to arson.
Sixth, reasonable mix. It can not only produce a variety of pests and diseases, but also save labor and time. It is also possible to add an appropriate amount of fertilizer or foliar micro-fertilizer to the pesticide. But be careful: when mixing, you must first understand the characteristics of various drugs, otherwise, it is counterproductive. For example, the bactericides such as zinc or dexamethasone are easily decomposed in the presence of alkaline substances, and cannot be mixed with the stone sulphur mixture or Bordeaux mixture.
Second, timely medication. Use drugs to prevent and kill eggs, mites or larvae when the pests and diseases occur. In the period of occurrence, it is necessary to use the medicine in time to control the pests and diseases in the stage of spotting and prevent the spread.
Third, choose the type of medicine. In rainy and snowy weather, dust is generally used to reduce the humidity in the shed.
Fourth, even the anti-drug change. After the occurrence of pests and diseases, it is generally necessary to continuously control 2 to 3 times, each interval of 7-8 days. In the process of prevention and control, pesticides are used in rotation to prevent the development of resistance to pests and diseases.
Fifth, the dose is strict. Strictly follow the use concentration and dosage of the drug in the manual. Spraying and spraying in the shed must be comprehensive and uniform. The spray of the drug is generally carried out in the morning to ventilate the temperature inside the shed and reduce the humidity in the shed. Aerosols are generally used after closing the greenhouse in the evening, and attention should be paid to arson.
Sixth, reasonable mix. It can not only produce a variety of pests and diseases, but also save labor and time. It is also possible to add an appropriate amount of fertilizer or foliar micro-fertilizer to the pesticide. But be careful: when mixing, you must first understand the characteristics of various drugs, otherwise, it is counterproductive. For example, the bactericides such as zinc or dexamethasone are easily decomposed in the presence of alkaline substances, and cannot be mixed with the stone sulphur mixture or Bordeaux mixture.
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