After the frost has fallen, greenhouse strawberry should be kept warm

Increase the transparence of the shed film. Choose a transparence-free dripping film. After snow, clean the snow on the shed film, and regularly clean the dust on the shed film to increase the light and raise the temperature of the shed. .

Grass-covered sheds Shed strawberries Antifreeze Before the colds approach, add grass stalks or corn stalks around the greenhouse at night to increase the shed temperature by 2°C to 3°C. When the temperature drops suddenly, it can be covered with a layer of common agricultural film or old film on the grasshopper, which can not only improve the heat insulation of the grasshopper, but also prevent rain and snow from wetting the grasshopper.

Three layers of film insulation Cold and frost-proof film will be double fold (also available waste film), width 1 meter, clamped on the inside of the first layer of the greenhouse film (between the steel pipe and film), if necessary, in the second floor steel film Add a 1 meter wide agricultural film inside, along the entire shed to pull the whole pull tight, can play the role of insulation resistance to cold and freezing.

The coal stove is warmed and cold-resistant and frost-proof. 3 to 5 coal stoves per acre are placed in the strawberry greenhouse to heat and warm up. The time starts from 6 pm to 6 pm and repeats in the next few days. In order to prevent the influence of gas on the strawberries during the heating process, smoke chimneys must be placed on the coal stoves to ensure that the gas is discharged outside the shed or smokeless charcoal is used.

To increase the insulation of the back wall of a greenhouse To improve the insulation performance of the back wall of a greenhouse, the following measures may be taken: one is to increase the thickness of the back wall of the greenhouse; the other is to put a layer of bricks on the back wall; and thirdly, to construct a hollow insulation wall inside the wall The hollow part is filled with straw or polystyrene foam board; the fourth is the construction of a fire wall, which is convenient for raising the temperature. This method is suitable for severe cold areas.

Before the advent of smoke and cold around the greenhouse, crop straws, firewood, etc. were ignited around the outside of the greenhouse. The smoke produced was used to drive out the cold, so that the temperature around the greenhouse was raised, thereby increasing the temperature inside the greenhouse and reaching the goal of resisting cold current.

When the mulching film covers strawberries in the greenhouse with high ridge cultivation, it can cover the mulch on the ridges, which can increase the ground temperature by 2°C～3°C and also facilitate watering. However, the ridge height in the dry areas should not exceed 10 cm. Http://

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