1. Reinforce the sheds of vegetable greenhouses: In order to increase the span, support columns must be added, wind pressure should be resisted, and the weight of the outer cover straw be supported to prevent the collapse of the greenhouse. 2, cover, do a good job to keep warm and prevent freezing. Check the plastic film covered on the scaffolding of the greenhouse and repair or replace it in time if it is damaged. Pay attention to the weather forecast of the local weather station. When the weather is fine, pay attention to ventilation and adjust the temperature and humidity in the shed. In case of cold air, open the shed door prematurely. Advocate double outer membrane, small arch shed and add mulch. 3. Artificial heating: Burning boilers, lighting, etc. to increase the temperature of greenhouses, and conditionally adding grass around the greenhouse at night to increase the temperature within the greenhouse by 1 to 2°C, which can effectively promote the growth of vegetables and enhance frost resistance. . 4, timely earth-cultivation, reasonable top-dressing: combined with cultivator, the smashed mud cultured in the vegetable roots, and increase the application of farmyard manure, pig farmyard manure or soil fertilizer and other warm farm fertilizer, applied per acre 1000 kg to 1500 Kilograms can not only loosen the soil, raise soil temperature, but also directly protect the root system, but the cultivator depth should be 5 to 10 cm. At the same time, nitrogen fertilizer should be controlled, and the amount of nitrogen fertilizer should be appropriately reduced at the seedling stage. Partial application of nitrogen fertilizer should be avoided. The seedlings should be treated at low temperature to increase the resistance, and the resistance should be improved. The foliar fertilizer should be emphasized. When the temperature is low, the vegetables can be sprayed with 1-2 times 0.2% phosphoric acid. Hydrogen potassium solution enhances cold resistance. Sprinkle ash: It can prevent cold and freeze, but also increase fertilizer, but also has better control effect on root rot of cruciferous vegetables. 5. Clearing the ditch drainage: Clean the ditch and eliminate the accumulation of water in the field, so that the rain can be drained out of the field in time and not stained with water. For the high-groundwater table, after rain, it is necessary to promptly open up the “three ditch†to ensure smooth drainage. In order to lower the water level, remove stagnant water, increase soil temperature and promote vegetable growth. 6, do a good job of pest control. Winter is often accompanied by continuous rain and cold weather. The humidity in the shed is relatively high and the plant resistance is weak, which can easily cause the disease to increase. Winter vegetables in the greenhouse in our county must pay special attention to the occurrence and spread of eggplant diseases and root rot. One pest prevention and control is the timely removal of shed diseased plants, diseased branches, diseased leaves, diseased flowers, diseased fruit; Second, strict control of water within the greenhouse, reduce the air humidity inside the greenhouse, reduce the incidence of vegetable shed causes, cloudy days with chlorothalonil Smoke or Sucrophone smoke agent fumigation; third is to catch the fine weather, actively select counterparts to prevent and treat pesticides.
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