Cover the multilayer film. It can be covered with double or multiple layers of insulation film, and can be covered with a shed or cover film in the shed. It can also be covered with non-woven fabrics.
Burning furnace. During the cold wave, a heating furnace with a flue pipe is used for warming. Pay attention to the strict exhaust pipe to prevent leakage of smoke and damage the vegetables.
Smoke increases temperature. The warming effect of this method is fast and good. In an acreage of sheds, use 2-3 tile pots and sawdust to ignite fumes in the shed to cool down, or to light a few candles on the east and west sides of the greenhouse, or to pile firewood or charcoal on the walkway to ignite and warm. At the same time, be careful to prevent fire or fire from burning the surrounding plants.
Water storage potential. In addition to implementing the above measures, the vegetable field should be filled with water to accumulate potential heat energy, and it can also enhance the cold-resistance effect. The use of electric heating and warm organic fertilizer can also increase the soil temperature.
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