Early prevention of large wind and multi-shed rooms in spring
There are often strong winds and cooling weather in spring, which will bring losses to the management of shed vegetables. The majority of vegetable farmers can take the following measures to prevent in advance:
One is to choose greenhouse films with complete functions, anti-aging and strong resistance, such as EVA multifunctional composite film, PO film, etc., which not only can prevent aging, are not easy to tear, but also have good light transmission, which is very beneficial to winter and spring vegetable production.
Second, pay attention to watching and listening to the weather forecast. Before the strong wind is coming, check whether the laminating line of the solar greenhouse is firm. The plastic greenhouse is pressed between the arches with a laminating rope with a cloth cover, and buried and fixed around it.
Third, when strong winds come, close the vents and doorways of the solar greenhouse to prevent strong winds from blowing into the greenhouse to reduce film damage. At night, on the grass thatch and the outer covering film, press two thin steel cables with cloth sleeves horizontally from east to west to prevent the grass thatch from blowing up at night.
Fourth, after strong winds, if plants are found to be wilting, spray the same nutrient solution as room temperature (such as Datianyuan No. 1, 0.2% to 0.3% urea and potassium dihydrogen phosphate mixture), which can reduce the wilting. It can also supplement nutrition. Choose fine weather and apply biological fertilizer to improve root activity and enhance resistance.
If the shed film is overturned and the seedlings are frozen to death, it is necessary to hurry up and replace the stubble with the vegetable nursery to avoid delays in production and update the shed film in time. Cultivation management should pay attention to some details, such as installing a windshield on the inside of the door to prevent cold wind at the entrance from harming vegetable plants; installing a windproof film at the vents above the greenhouse to prevent cold wind and rain from entering the air outlet and affecting the plants.
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