What about the key points for selecting flour mesh?...

The most important thing in a mango tree plantation is yield. We are now choosing nylon nets for the orchard growing industry. It is a new product of environmental protection. Has effectively helped many growers to obtain better economic benefits, while reducing input costs.

In order to prevent virus disease, 60 mesh nylon mesh insect nets are installed on the upper and lower air vents of the greenhouse, which can completely block pests such as Bemisia tabaci outside the greenhouse, and prevent virus-borne pests from bringing viruses and other germs outside the greenhouse into the greenhouse to reduce vegetables. Chance of onset.

This also has a great impact on the ventilation and cooling of the greenhouse. Even if the shading net is used for cooling, the temperature in the shed is still high due to the poor air circulation in the shed, and the maximum temperature in the shed is still maintained above 35 ° C. So, how should the vegetable farmer cool down after the device 60 intends to prevent insect nets?

Open the air vents up and down to the maximum. Now that the grass curtain on the greenhouse has been removed, the vent on the top of the greenhouse can be opened to the maximum, that is, the vent film can directly support the southern margin of the back slope of the greenhouse. By increasing the vent, the high-temperature air in the greenhouse can be accelerated. 'S discharge.

Because the current temperature is generally not lower than 15 ℃. Therefore, as long as it is in a good location, vegetable farmers can open the product's upper and lower air outlets day and night, and when the temperature is low or it rains on a cloudy day and night, then the upper and lower air outlets of the greenhouse can be closed.

For greenhouses with 60-mesh insect screens, vegetable farmers do not need to set up windscreens. When the vegetable farmers used to set up a windshield, they were all in order to prevent the cool wind outside the shed from blowing into the shed, and to prevent the tomato fruits cultivated in the shed from showing peel.

Now the use of relatively high-density nylon mesh insect screens will cause a certain barrier to the cold air outside the shed. Slowing down the speed of cold air entering the greenhouse, preheating the cold air during the process of entering the greenhouse, the same can prevent the cold air from nicking the skin of the tomato.

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