The greenhouse vegetables often cause diseases and insect pests because the humidity is too large, and the commonly used spray application method increases the humidity in the greenhouse while controlling the pesticide application. Therefore, the prevention and control of vegetable pests and diseases in greenhouses should be promoted by powder spraying. The dusting method is used to prevent vegetable diseases in greenhouses. It has the advantages of saving labor and chemicals, not increasing the humidity in the shed, and repelling the effects of high efficiency. However, the following matters should be noted.
Pharmaceutical selection
Select suitable dust agents, such as cucumber downy mildew, tomato late blight, use 10% antifungal agent or 5% chlorothalonil dust agent; control cucumber anthracnose, black heart disease, choose 5% chlorothalonil or 12% of KeChunLing dust agent; control cucumber bacterial keratopathies, use 10% B drops of dust agent; prevent vegetable gray mold, leaf mold, early blight and late blight, choose to benefit from dust agent. Drug selection
Should adopt domestic harvest type 5 or 10 hand powder duster. Before the spraying, the shed was closed, and then 1 kg of powder was sprayed for each acre. The pesticide was put into a duster kit and the amount of powder discharged was adjusted to about 200 grams per minute. Pay attention to spraying time
Sunny days should be applied in the morning or early evening. Cloudy and rainy days can be sprayed all day. The effect of applying pesticides is best after closing the shed in the evening. In the sunny morning to the afternoon when the sunlight is strong, the dustproof effect is low.
Pay attention to spraying method
Spraying the vegetables against the vegetables, whether uniform or not, has a poor effect. Only uniform air spray effect is good. If the air spray is not uniform, part of the powder cannot be well dispersed and the control effect will be reduced. Attention to personal safety
Spraying personnel should pay attention to bring a mask to reduce the harm of the medicine to the human body.
After spraying, it can be picked after half a month to ensure food safety.
Vegetable powder is a powdered vegetable particle made from vegetable raw materials that are dried and dehydrated first, and then further crushed; or first be mashed, and then spray-dried to be uniform. Covers carrot powder, tomato powder, potato powder, pumpkin powder, red beet powder, spinach powder, celery powder, yam powder and other vegetable categories. Weaned infants and young children cannot or cannot eat vegetables due to insufficient tooth development, elderly people are inconvenient to eat vegetables due to poor teeth or loss of teeth, and some adults reduce their intake of vegetables due to work or other reasons, so vegetable powder There is a wide market in this group of people. In addition, vegetable powder is also a pure natural coloring agent (carrot powder, tomato powder, spinach powder, red beet powder, celery powder, pumpkin powder, etc.), and is an excellent raw material for processed vegetable bread, vegetable noodles, specialty foods, etc. .
Vegetable powder can be applied to almost all areas of food processing, can be used to improve the nutritional content of food, and improve its color and flavor, etc.
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