I don't know what to do in the greenhouse in winter, let's take a look at these planting experiences.

    In the process of planting vegetables in greenhouses, it is necessary to summarize various factors affecting the growth efficiency of vegetables in greenhouses based on the actual local conditions, and conduct scientific and reasonable analysis and summary, use appropriate technologies to increase production and efficiency, and carry out related research work. Vegetables provide scientific planting technology to keep the yield of greenhouse vegetables at a high level.

    1. Temperature management The plant's own cold tolerance and the matching of temperature-increasing and thermal insulation facilities are suitable for the growth of overwintering greenhouse crops. Among the four elements of water, fertilizer, gas and heat, temperature is the most active factor for crop growth. Antifreeze to protect seedlings and heat preservation to promote growth are the top priorities of greenhouse overwintering management. Mainly from the aspects of enhancing the cold tolerance of the plant itself and the matching of warming and thermal insulation facilities.

    Two: If there is rain and snow in the weather forecast, but the weather is good when the shed is built, is the second film covered? At this time, you should not take chances. Once it rains and snows, the grass curtain will be difficult to dry all winter. Now some vegetable farmers spend extra effort, and it is preferable to cover the second film every day.

    Three: Continuous cloudy days, low temperature and little sunshine for more than ten days, should we let the wind out? At this time, it is best to let the wind out once every 3 days. It is necessary to let the wind blow at noon. Especially in the greenhouse that uses livestock and poultry manure as the base fertilizer and has just been planted, it is even more necessary to let the air out in time. The proliferation of bacteria has led to the occurrence of many diseases.

    Four: focus on improving the cold tolerance of plants. Different crops have different cold tolerance, and the same crop has different cold tolerance. It is mainly related to the concentration in plant cells. Nitrogen fertilization, vigorous growth, soft long-shade plants, etc., the concentration of cells in the body decreases, and the cold tolerance decreases.

    Five: In cloudy and snowy weather, vegetable diseases in the shed are most likely to be prevalent. At this time, vegetable farmers choose to smoke sheds to prevent diseases. At this time, vegetable farmers should pay attention to the fact that if the straw curtain cannot be drawn and there is no ventilation on the second day after the smoking shed, it is easy to cause air damage to the vegetables; therefore, remind the vegetable farmers to combine the weather forecast when smoking the shed to ensure the smoked shed. Ventilate safely the next day.

    Six: When there is a strong wind in winter, how to put the grass curtain better? Practice has proved that the northwest wind often blows in winter. At this time, the straw curtain should be placed from the west first, so that the straw curtain is not easy to blow over, and the second film will not be damaged.

    Seven: The north wind blows after a continuous cloudy day, and it is also a sunny day. At this time, the vegetables are prone to wilting. In this case, the method of playing back the straw curtain can be used to avoid strong light exposure. But sometimes the grass curtain cannot be played back because the wind is too strong. At this time, foliar water should be replenished. Fish protein and potassium dihydrogen phosphate can be used for spraying.

    Eight: The occurrence of pests and diseases is conditional and regular, and it is necessary to prevent and control overwintering vegetable diseases. It is necessary to coordinate the relationship between thermal insulation and ventilation and dehumidification, make full use of agricultural control measures, and flexibly use chemical spray control and fumigation control methods. Implement timely prevention and control, adhere to symptomatic prevention and control, and choose the right time and appropriate spraying equipment for prevention and control.

    Nine: Do not wipe the shed film immediately after the weather turns fine. If the shed film is wiped at this time, direct light will easily cause the plants to wilt and cause sunburn, etc. It should be wiped when the plants can receive direct light.