How do vegetables fight pesticides? In the process of planting vegetables, pesticides can be one of the most important links. The drug-killing technology is not good, not only can not prevent pests and diseases, but also produce phytotoxicity. Therefore, it is especially important to master the relevant pesticide-killing technology. I said that the vegetable planting and medicine technology is going to help everyone.
[Before the fight]
First, reduce the source of pests
Clean up diseased leaves, diseased branches, and diseased fruit plants, and bring them out of the garden to burn or bury them.
Second, choose the time to fight drugs
1, according to temperature changes to determine
a, hot weather
Before 10 o'clock in the morning, fight drugs after 4 pm.
b, cool weather
After 10 am, fight before 2 pm.
c, the greenhouse in winter and spring is best to fight drugs in the morning of warm weather.
2, according to the change in humidity to determine
a, the air humidity is too large
The deposited liquid will become larger droplets that will deposit in the lower part of the plant to cause phytotoxicity.
b, the air humidity is too small
The liquid medicine is easy to evaporate, reducing the efficacy of the drug, and serious burning stains may occur.
c, open vegetables
Properly trim the leaves and branches of the plant to maintain ventilation and ventilation.
d, greenhouse vegetables
In the morning, when you want to fight drugs, you need to choose to ventilate for a period of time. In the afternoon, you should choose to fight drugs 30 minutes or 60 minutes before the wind.
3. Determine according to the characteristics of pests and diseases
a. Control powder meal in the morning when the dew is not dry.
b. Control the flower scorpion horse to fight the medicine when it blooms in the morning.
c. Control leafhoppers to fight drugs in the evening or at night.
d. Prevention and treatment of diseases are carried out after the rain before the rain, before the watering, before the cloudy days, at the early stage of the disease.
Third, choose the right pesticide
1, anti-disease
The right medicine, understand the instructions and functions of the medicine, and rotate the medicine.
2, pest control
For the insects, take care of killing adults, killing eggs, and rotating medicine.
Fourth, the dilution of pesticides should be appropriate
1. Dilute pesticides should be operated according to the instructions for use, and the dosage can be slightly increased according to the severity of the disease.
2. Rotate to use another pesticide.
3. Optimize your own fight medicine technology.
5. Mixed pesticides should be reasonable
1. In the early stage of the disease, use a protective fungicide + a systemic therapeutic fungicide.
2. Insecticides are compounded with insecticides that kill eggs and kill insects.
3. Note: Copper preparations should avoid mixing with alkaline pesticides.
[When fighting drugs]
Sixth, master the fight drugs
Focus on the back of the leaf, the fruit, the flower, the base of the stem, etc.
Seven, adjust the size of the drug drop
1. Adjust the size of the drop according to the performance of the sprayer and its nozzle.
2. When using greenhouse vegetables to control diseases and small insects such as aphids and whitefly, use a fog machine.
3. When using vegetables in the open field to control pests and diseases, use a sprayer that sprays larger droplets.
[after drug fight]
Eight, pay close attention to the development of pests and diseases
After 1-2 days of spraying, it is necessary to regularly inspect the field to see how the pest control effect is effective, whether the medicine used in the fight is effective, and whether it is necessary to do a fight, what to do, etc. These are all need to be considered after the fight. .
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