What should be paid attention to when using the cheap Fiberglass insect screen in summer
In order to prevent virus diseases, the cheap Fiberglass insect screen are installed on the upper and lower air vents of the greenhouse. In this way, the bemisia tabaci and other pests outside the shed can be completely blocked by the Fiberglass insect screen, so as to prevent the virus-transmitting pests from bringing viruses and other germs from outside the shed into the shed, so as to ensure the cleanliness of vegetables and and reduce the amount of fertilization.
When using the cheap Fiberglass insect screen, the upper and lower air vents of the greenhouse can be opened to the maximum. The straw curtains on the greenhouse in summer have been removed, and the air vents on the top of the greenhouse can be opened to the maximum, which can accelerate the discharge of high-temperature air in the greenhouse and make the full using of cheap Fiberglass insect screen. For the air vent at the front of the greenhouse, the vegetable farmer can increase the amount of cold air entering the shed by increasing the vent to reduce the shed temperature.
Because the temperature in summer is generally not lower than 15 ℃. Therefore, as long as it is sunny, the vegetable farmers can open the upper and lower air vents of the greenhouse where the cheap Fiberglass insect screen is installed day and night, and close the upper and lower air vents of the greenhouse on a cloudy night. In the greenhouse installed with high-density Fiberglass insect screen, the windshield film will also affect the air circulation in the greenhouse, which will reduce the ventilation and cooling effect of the greenhouse. Therefore, vegetable farmers should remove the windshield film in the shed.