1. Watering. Watering can stabilize the temperature, increase the heat capacity of the soil, and have a good defense against cryogenic frost damage. Generally within 10 days after watering. However, in frost weather where the temperature drops below 0 degrees, don't water the frost on the day of the frost so as to avoid freezing damage.
2. Spray water. Spraying water can increase the air humidity of the wheat field. When the water vapor freezes, it can release a large amount of heat, which has a certain role in preventing and treating wheat freeze injury. In addition, when the water is sprayed, people's walking can stir the air in the wheat field, increase the amount of heat exchange, and also have a good effect of preventing freezing damage.
3. Smoke smoke. When the low temperature comes, the occurrence of frost damage can be effectively prevented when the firewood is smoked, but the smoke is smoked under the condition of static wind. When there is wind, the effect of smoke is poor.
4. Spray chemical preparations. Tests have shown that spraying organic liquid fertilizers and micro-preparations can improve the photosynthetic capacity of wheat and rapidly increase the concentration of cytosol, which has a good preventive effect on low temperatures around 0°C. However, it is necessary to spray these preparations for more than 1-2 days of sunny weather.
Frost damage remedies
1. Immediately replenish fertilizer and water in irrigated land, add 10 kg of urea per acre, top coat must be hoeed, or apply fertilizer immediately after fertilizing, immediately water after fertilization, in order to promote the recovery of wheat as soon as possible, 10 After the day, the wheat turns green from yellow to yellow, and can promote the growth of large seeds. For frozen dry wheat fields, 1 kg of urea per acre and 50 kg of water are added for foliar spraying to reduce yield loss.
2. High-yield wheat field after jointing, that is, the first section of the main stem is fixed, the second section of the elongation, the third quarter outcrops can be applied urea or diammonium phosphate 7.5-10 kilograms, combined with water after top dressing, and strive for high yield and then high yield .
3. Dryland wheatland management measures: Dryland wheat fields with good soil moisture content must have 5 to 7.5 kilograms of urea per hectare, and have more ears, ears, and seeds to ensure a good harvest.
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