1. Smoke and Frost After measuring the wind direction, in the upwind of the frost block, every 10 meters or so, dig a small round pit about 30 centimeters deep and about 90 centimeters in diameter, put the hay, and put it on a pile of wet grass. For smoked materials, according to forecasts, the smoke is ignited when the temperature drops to 0°C to 1°C. It's important to have a good grasp of the ignition time, not too early or too late. The smoke screen should continue until the sun rises and the temperature rises.
2. Irrigation Anti-frost irrigation can increase the thermal energy and thermal conductivity of the soil while increasing air humidity and reducing radiation cooling. According to the weather forecast, watering irrigation on the day before coming to frost can increase the ground temperature by 1°C to 2°C, and the anti-frost effect is ideal.
3. Spraying cold-resisting agents for preventing frost Spraying cold-resistance agents before the frost enhances the cold-resistance of vegetables, corn, soybeans, and other crops, and ensures that the crops' safety is beyond the initial frost period.
4. Spray Frost Prevention Before spraying, spray the water on the crop with a sprayer, which can make the leaves of the crops condense with water. The water droplets can release latent heat, which can increase the temperature and protect the crops from freezing damage.
5. Cover the frost Cover the vegetables with straw curtains, mats, plastic film, etc., cover the surface of the crop about 4 hours before the frost and remove it after sunrise to keep the heat from being lost. The effect of frost protection is better.
6. Take comprehensive measures to promote the maturity of crops. The anti-frost measures shall adopt comprehensive measures to promote the maturity of crops and accelerate the birth process of autumn crops. Intercropping the corn in a timely manner, cutting off empty stalked plants and dead spikes, standing stalks, skin drying and other methods to promote early maturity; spraying of potassium dihydrogen phosphate in late-maturing soybean fields to promote maturity; timely and late harvest of crops suffering from light frost damage, promote After cooked, dehydrated to improve quality.
YT-T13
YT-T13
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