Antifreeze measures for winter vegetables

Winter crops and vegetables are also afraid of cold. How do we ensure the normal growth of crops in winter?

Anti-freezing measures for open vegetables

1. Make a sunny dish and make the vegetable bowl slightly inclined toward the south to increase the amount of solar radiation received and increase the temperature of the ground.

2. Low-groove dense planting, appropriate deep-season winter blowing more northwest wind, can be open in the east-west or northeast to southeast, deep 10 ~ 13cm shallow ditch, the vegetables will be planted in the ditch, there is a sheltered warmth effect. The winter vegetables should be planted at depth, and the roots that are prone to frost damage should be buried in the soil to avoid wind blows and reduce frost damage.

3. Artificially cover the antifreeze, before the winter, sprinkle with defoliation, loose hair or crop stalks on the dish, as a long-term cover in winter, and withdraw when the spring is warmer.

4. Good management of fertilizer and water, timely irrigation of winter frozen water planting, fertilizer should be reasonably applied to promote early-onset. After winter, the amount of nitrogen fertilizer should be controlled to prevent excessive growth. When the cold wave intrudes 1 to 2 days and after the cold wave, when the weather warms up and the soil thaws, timely watering or thin human feces and urine should be applied to prevent the ground temperature from falling too low and prompt the crops to resume growth in time.

Greenhouse Vegetables Antifreeze Measures

1. Strengthen coverage, buckle small sheds in large sheds, use arched bamboo scaffolds, etc., cover the membranes at night, cover grasshoppers on the membrane, and cover the membranes in the shed to increase temperature and moisture. The use of plastic film as the apron at the bottom of the shed can significantly reduce the cold air intrusion at the bottom. At the same time, attention should be paid to blocking the gap in the shed to minimize heat dissipation in the gap.

2. Temporary heating, when the daytime temperature in the greenhouse is lower than 15°C and the nighttime temperature is lower than 5°C, cold or freezing injury may occur. At night, temporary heating measures shall be taken to artificially supplement heat energy, that is, placing several briquettes in the shed to increase the temperature inside the shed.

3. Strengthen the management of fertilizer and water, before and during low-temperature freezing damage, the crop should stop using nitrogen fertilizer to prevent the plants from being too soft and cold-resistant and the fertilizer to kill dead seedlings. Spray 0.3-0.5% of potassium dihydrogen phosphate and 400-500 times of spraying. Plant antifreeze solution. Drain the manure water in the shed so that the soil is not easy to freeze, so as to protect the seedlings and prevent cold.

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