How can tomatoes survive the winter safely? What planting techniques do you need to master?

With the advent of the deep winter season, the temperature decreases gradually, and the overwintering tomato is facing the test of low temperature. Tomato is a temperature-loving crop, and its tolerance in cold environment is limited. When growing tomatoes or raising seedlings in winter, spring or deep winter, they will suffer from low temperature and cold damage when they encounter low temperature or frost. how can tomatoes survive the winter safely? What planting techniques do you need to master?

First, how can tomatoes survive the winter safely? What planting techniques do you need to master?

1. Topdressing

The growing period of tomatoes is relatively long, and the yield is high, and the demand for nutrition is large and comprehensive. Therefore, we should control the proportion of nutrients in fertilizer to ensure that it contains the nutrients needed by tomatoes. Before planting, the base fertilizer should be fully applied, and in order to ensure the robust growth of tomatoes, topdressing should be done during the growing period. In the tomato seedling period, it is necessary to properly spray foliar fertilizer, once a week, spray two stages, and then apply water and fertilizer once in 4 true leaves. In addition, in the slow seedling, that is, the fruit expansion period should also be timely topdressing to promote the growth of tomatoes and avoid malnutrition.

2. Temperature

The temperature in winter is relatively low, which is not suitable for the growth of tomatoes, but planting in the greenhouse can effectively control the temperature. Therefore, the planting temperature is the primary management work in winter, and the suitable temperature for tomato growth is about 22 degrees. And there are certain changes in the temperature in the morning and afternoon in winter, for example, the temperature in the morning is about 25 degrees, not higher than 33 degrees. Reduce about two degrees in the afternoon, the lowest temperature at night can not be lower than 15 degrees, the temperature difference between day and night will be controlled about 12 degrees. If the temperature is lower than 10, the growth of tomatoes will be affected, stop growing below 4 degrees, and in severe cases, the whole plant will be frozen.

3. Lighting

The light demand of tomato is also relatively large, and its yield is directly related to the duration of light. In planting, we should improve the orchard permeability, remove the lateral branches and cut off the old leaves in time, which can not only increase the light area of the plant, but also reduce the nutrient consumption and promote the healthy growth of the fruit. After entering the white ripening stage of tomatoes, all the leaves in the lower part of the ear should be cut off to promote light absorption and effectively reduce the incidence of diseases and insect pests. If the natural light time is not enough, artificial lighting should be carried out when necessary to prevent the growth of tomatoes.

4. Watering

Tomato water demand is very large, some people have done a special survey, in the tomato fruit development period, each plant needs to absorb at least 1 kg of water every day. Therefore, we should pay attention to watering when planting, to ensure that the soil is in a moist state, the watering method is small water drip irrigation, dry and wet. However, in order to avoid soil salinization, a flood irrigation is needed for about 28 days to remove excess salt from the soil. However, in winter, we should pay attention to the water temperature, the water temperature should be controlled at about 10 degrees, if the water temperature is less than 8 degrees, there will be a large number of hollow tomatoes, reducing fruit quality.

II. Matters needing attention in tomato planting

The main results are as follows: 1. There are great misunderstandings in fertilization: large base fertilizer, more nitrogen fertilizer, less biological agents and organic fertilizer lead to tomato leaf hypertrophy, tomato fruit expansion slowly, and low soil organic matter content, resulting in serious Botrytis cinerea in the lower part.

2, the ridge is too low or not ridging: cause low ground temperature, high humidity, tomato root growth retardation in such an environment, and even produce root rot, light reduced yield. More serious direct extinction.

3. Pruning and leaf thinning is unreasonable: some leaves have poor permeability, some leaves are excessively beaten, resulting in no leaves in the lower part full of fruit, poor leaf permeability, nutrient shunt, insufficient fruit expansion power, and the lower part is easy to suffer from Botrytis cinerea; beating leaves at the bottom is too heavy, the photosynthetic ability of leaves decreases, resulting in fruit expansion and slow color change.

4. Improper use of dipping anther: different concentrations of dipping anther should be used in different seasons and different weather conditions, but if it is convenient and the same in cloudy days, it will lead to abnormal fruit or grain exposure, affecting commodity value and yield.

5. Field management: watering is suddenly large and small, windproof is random, and temperature control is improper, resulting in overgrowth of some tomato plants, withered leaves, withered leaves, and falling flowers and fruits.