Greenhouse vegetables in winter and spring because of its special environmental conditions, the occurrence of more serious disease, prevention spray method is time-consuming and laborious, will increase greenhouse humidity, while the use of dust spraying method, with time-saving, labor-saving, high control effect, Significant benefits and other characteristics. Stainless Steel Welded Round Tube Stainless Steel Welded Round Tube,Stainless Steel Sanitary Tube,Stainless Steel Sanitary Pipe,Stainless Steel Bowl With Lid Foshan Maysky Stainless Steel Co., Limited , https://www.mayskysteel.com
First, the application equipment and dosage can be harvested type-5 or harvest type-10 hand powder sprayer, requiring the air velocity of the nozzle to be more than 8 meters per second. The harvesting speed of the Harvest Hand-5 type hand crank should reach 36 rpm, and the Harvest-10 type should reach 50 rpm. The purpose is to produce a strong enough wind to make the powder evenly discharged. The amount of powder discharged is adjusted to be about 200 grams per minute. Generally, 1 kg of dust is used per acre, and it takes only 5 minutes to process 1 mu of greenhouse.
Second, the preparation of the shed before spraying the vents and doors of the shed before the dusting, the shed is covered with plastic film, as far as possible to achieve a closed state, if the plastic film has small pieces of damage to the dust has no effect.
Third, the best time to spray powder during the dusting time is morning or evening. The cockroach has not been uncovered or just closed, so the deposition rate of the powder on the crop is higher. Noon should be avoided at noon on sunny days, and powder can be sprayed at any time on cloudy days. Ventilation can be turned on two hours after dusting. Spray once every 7 to 10 days according to the condition.
4. Spraying method greenhouse: adopting the horizontal spraying method of retreat, that is, starting from the inner end of the greenhouse, the operator stands on the aisle, facing away from the north wall of the greenhouse, facing the south side, while spraying on the air, while retreating, until exiting the doorway ,Close the door. If there is any remaining medicine, the powder spray pipe can be inserted into the room from the upper air outlet to spray, until the remaining powder is sprayed. Greenhouse: The left and right air swinging method is adopted. From the north end, the operator stands on the aisle and swings the powder pipe to spray powder on the left and right sides. While spraying, it retreats until it exits the door of the south end and closes the door. Medium and small arch shed: The shed is sprayed, that is, the shed is uncovered on the side of the shed or on different sides of the shed, and the powder spray pipe is inserted into the shed for spraying, and the nozzle swings left and right.
5. Dust-spraying points and precautions When spraying, the powder must be sprayed evenly into the space of the booth. It is not advisable to spray the powder-spraying tube to the plant line by line, otherwise the deposition will be uneven. The operation should be in accordance with the pesticide safety operation rules. It is required to wear long-sleeved overalls, goggles, masks and protective caps. The hands and other exposed skin must be cleaned after work.