Indoor vegetable dust application effect is good

In winter, even in cloudy snow and foggy weather, due to its special environmental conditions, the temperature of vegetable greenhouses is relatively serious. It is time-consuming and laborious to use the spray method, and it also increases the humidity in the greenhouse. The application of the dust method saves time and effort. The effect is good and so on.

Dust flow for a long time, the drug particles can be deposited in various parts of the plant, but also spread to the hidden parts of the plant distribution, even if the protected area is not strict, does not affect the control effect. At the same time, it is easy to operate, save labor, save time, and save medicine. Spraying powder does not need to add water, is not limited by the water source, the spraying time is short, and the time between medications is long, the medication is less, and the utilization rate of pesticides is higher.

Spray preparation to choose suitable dust agent: control cucumber downy mildew, tomato late blight, use 10% antifungal agent or 5% chlorothalonil dust agent; control cucumber anthracnose, black heart disease, choose 5% of chlorothalonil Clear or 12% KekeLing dust agent; Control cucumber bacterial keratopathies, use 10% B drop dust agent; Prevent vegetable gray mold, leaf mold, early blight and late blight, use 12% of the benefits powder.

Choose the right duster: It should adopt the domestically-produced 5 or 10 hand-type 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.

Pre-spray preparation: Before spraying, close the vents and doors of the booth and tightly cover the plastic sheeting of the booth to ensure that it is in a confined state. If there is any damage to the dust, there will be no impact on the dust.

Spraying time: The best time for powder spraying is in the morning or late afternoon. The pods have not been uncovered or have just been closed, so the deposition rate of the powder on the crops is high. It should be avoided at noon on sunny days, and it can be sprayed at any time on cloudy days. About 2 hours after spraying, ventilation can be turned on. The first spray was sprayed once every 7 to 10 days according to the disease at the early stage of the disease.

Spraying method greenhouse: The use of a retrograde spray method, that is, from the beginning of the greenhouse, the operator stood in the aisle, facing the northern wall of the greenhouse, facing the south side, while spraying against the air, while retreating, until exit the door, the door close. If there is residual medicine, the powder spray tube can be sprayed into the room from the upper air outlet and sprayed until the powder is sprayed.

Greenhouses: Using left-right swing spray method, starting from the north end, the operators stood on the aisle and sprayed dusting pipes to spray powder on both sides. While spraying, they retraced and retraced until exiting the south entrance and closing the door.

Small and medium arch sheds: The shed is sprayed on the outside of the shed, or the shed is partially uncovered on one or both sides of the shed, and the dusting pipe is projected into the shed for spraying. The nozzle sways.

Precautions When spraying powder, the powder must be evenly sprayed into the space of the booth. It is not appropriate to spray the powder spray tube at the line by line, otherwise the deposition is not uniform.

The pesticide safety operation regulations shall be observed during the operation, long-sleeved overalls shall be worn, goggles, masks and protective caps shall be worn, and the hands and other exposed body skins must be cleaned after the work is completed.

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