1. The thermal capacity of winter irrigation is much larger than that of soil, which can play the role of summer cooling and winter insulation. The winter water is poured on the fruit trees before freezing to keep the soil moist, increase the soil heat capacity, and stabilize and increase the ground temperature.
2. It is very good that the soil is cold winter months and the roots of the fruit trees are rooted to prevent the cold wind from invading and the rhizome from freezing. The best soil for the bauxite is wet soil, and the heat preservation performance of the wet soil is good. The best thickness of the bauxite is 20~25 cm.
3. Scraping wood ash wood ash contains various nutrients such as phosphorus, potassium, calcium, silicon and so on. It can absorb heat and keep good heat, loosen the soil on the ground and provide plenty of nutrients for fruit trees. However, salt orchard orchards and orchards with soil pH greater than 8 should not be used.
4. Applying a warming agent Applying a general tree guard on the trunk can quickly form a layer of fluorescent protective film on the surface, which has asphyxiating and antifreeze effects.
5. The orchard covers wheat straw, rice straw and other crop straws. The entire garden or line covers 10 to 15 cm thick, making it hard for the cold wind to invade and reduce the evaporation and loss of water to increase the antifreeze effect.
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