How to manage tomatoes in cold winter?

    Tomatoes are one of the vegetables we all know. They can be eaten raw or cooked with food, and they are in great demand in the market. Tomatoes are a very widely grown vegetable in China, and they are getting better and better with our greenhouse growing technology. Now it is possible to grow tomatoes in almost every season. At present, many people have begun to grow tomatoes in winter in greenhouses. So how to manage tomatoes in winter?

    Temperature: We all know that winter is a very cold season. The temperature is below minus zero. It is reasonable to say that this kind of weather is very unsuitable for the growth of tomatoes, but now tomatoes are grown in greenhouses, which can control the temperature of tomatoes. good. Therefore, the first thing to manage when growing tomatoes in winter is temperature. Tomatoes are more suitable for a temperature of about 22 degrees. However, in the morning and afternoon in winter, the temperature will change. Compared with the temperature in the morning, it is about 25 degrees, and it cannot be higher than 33 degrees. In the afternoon, it should be lowered by about two degrees. In winter, the temperature at night should not be lower than 15 degrees. The temperature difference between day and night should be controlled at about 12 degrees. If the temperature is lower than ten degrees, it will affect the growth of tomatoes. When it is lower than four degrees, tomatoes will stop growing, and in severe cases, it will cause freezing damage to the whole plant.

    Top dressing: The growing season of tomatoes is long and the production volume is very high. Tomatoes in this time period have very high nutritional requirements. So we need to control the proportion of nutrients in the fertilizer to ensure that the tomatoes contain all the nutrients. It is necessary to apply enough base fertilizer before planting, and to ensure that in order to make tomatoes grow more robustly, top dressing should be done during the growth period, and how much top dressing should be applied to tomatoes. When the tomatoes are in the seedling period, it is best to spray the foliar fertilizer appropriately. It is necessary to ensure that it is once a week, and it is necessary to spray twice, and then apply water and fertilizer once when there are four true leaves. It is also necessary to carry out top-dressing fertilizer in time after the slow seedling, that is, during the fruit greenhouse, which can promote the growth of tomatoes and avoid malnutrition.

    Watering: When growing tomatoes, it needs a lot of water. Someone once did a survey for tomatoes and said that during the fruit development period of tomatoes, each plant needs to absorb at least 1 kg of water per day, so we When planting tomatoes, pay more attention to watering work, and make sure that the soil is in a moist state. For the way of watering tomatoes, you can use small water droplets to water, see dry and wet.

    Light; when planting tomatoes, it has a very large demand for light, and the production of tomatoes has a great relationship with the length of light. We must improve the permeability of the greenhouse during planting, remove side branches in time, and cut off old leaves, not only to increase the light-receiving area of the plant, but also to reduce the consumption of nutrients, so that the fruit can grow stronger and stronger. After entering the white ripening period of tomatoes, all the lower leaves of the fruit ear should be cut off to promote light absorption and reduce the incidence of pests and diseases. If the natural light time is not enough, artificial light must be added for the growth of tomatoes. To prevent the growth of tomatoes from being stunted.