The anti-freeze of the pharmacy, before the advent of the low-temperature cold wave, spray the surface of the crop with the general manager of the tree, and also lay the surface of the sunshade net, hay, etc., to keep warm and prevent freezing, and reduce the freezing damage caused by the cold wave.
Fill the anti-freezing water. Before the frost comes, fill the field with water and increase the humidity of the air near the ground to keep the heat from dissipating and increase the air temperature.
The anti-freeze of the smoked smoke, the frost comes, burns the weeds, the fallen leaves or the non-toxic chemicals of the smoke, so that the ground is covered with a layer of smoke screen to prevent the heat loss on the ground and achieve the heat preservation effect.
Fertilize and freeze, before the frost comes, use fertilization to add ground temperature. Applying manure, compost and grass ash in the field can not only increase the ground temperature, but also increase soil fertility.
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