Improvement measures for warming conditions of wintering vegetable facilities in greenhouses and post-freezing management
Recently, the weather has become colder and colder. Wintering vegetables in greenhouses should also be protected against freezing and warming. Otherwise, once the vegetables are frozen, the growth of light crops is stagnant, causing serious death of vegetables, affecting quality and yield. Let's learn how to improve the warmth and post-freezing management of greenhouse vegetable facilities in greenhouses.
1. Improve the warmth of facilities
1. Increase insulation and film
At night, the grass is covered with a grasshopper around the greenhouse, and the surface of the greenhouse is covered with a layer of insulation to keep the greenhouse sealed. On this basis, a film is covered to prevent rain and snow from getting wet by the quilt and grasshopper.
2. Covering the mulch and small shed
If the ridge is cultivated, it can be covered with a layer of mulch on the high ridge; if it is cultivated in the sorghum, the ground temperature can be raised by the small arch shed. In particular, seedlings such as solanaceous fruits and green leafy vegetables should be covered with a mulch film + small arch shed + medium shed.
3. Set up a cold ditch
Dig trenches on the south side of the outside of the greenhouse to fill in insulation materials such as straw and straw to prevent the ground temperature from being lost.
4. Smoke
Before the cold current arrives, the smoke is ignited around the greenhouse, which prevents the heat around the greenhouse from radiating to the upper air and reduces the loss of heat.
5. Properly pour small water
The vegetable grower can properly pour small water, increase the soil moisture, and use the characteristics of moisture greater than heat and slow heat dissipation to increase the heat storage in the shed and increase the night temperature in the shed.
6. Spray fertilizer early
Before the low temperature comes, it can spray potassium dihydrogen phosphate or pour thin manure and manure to reduce the freezing degree of the soil and reduce the freezing damage.
2, management after freezing
Cut off dead branches
Cut off the parts that are damaged by freezing in time to avoid moldy lesions and induce diseases.
2. Watering insulation
Watering the frozen vegetables can reduce the freezing damage. The water should be poured thoroughly, and the field water should be able to seep out on the same day. After watering, grasp the favorable period of temperature rise and loosen the soil.
3. Topdressing fertilizer
Timely topdressing, promote plant growth, improve the vitality of the body and reduce losses. In winter, the temperature is low, it is necessary to apply less nitrogen fertilizer, and more phosphorus and potassium fertilizer can be applied.
4. Spraying the agent
After the plants are frozen, the pests and diseases are easily taken in. They should be sprayed with some protective agents, anti-disease and insect-repellent agents in time, and optional protective pest control agents, mancozeb, chlorpyrifos, and anti-drugs.
The above is the improvement of the warmth condition of the wintering vegetable facilities in the greenhouse and the post-freezing management, which I hope will help everyone.
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