Tomatoes are a common vegetable variety in our lives. During the season when tomatoes are on the market, the price of tomatoes is not very high. Therefore, many farmers want to plant tomatoes in the early spring season. With the development of agricultural technology, the temperature and season have basically been unable to affect the growth of crops, so it is very likely that farmers with proper greenhouse temperature control planting tomatoes in the early spring season. The following Huinong.com Xiaobian will tell you about how the tomatoes planted in the early spring season are cultivated in a multi-layered covering technology. The growers learn together!
Technical point one: selection of varieties
Planting tomatoes in the early spring can increase the temperature in the greenhouse, but the surface temperature of the soil is still very low. If the selection of general varieties is not easy to emerge, it is necessary to select low-temperature resistant seedlings. Put the seeds in warm water before cultivation. Soak for seven or eight hours and then sprinkle water on the cotton gauze and illuminate until the seeds are white, showing a germinated state and then cultivating in the soil.
Technical point two: fertilization
Before planting tomatoes in early spring, the greenhouse should be set up. The soil in the shed should be fertilized with organic fertilizer. The organic fertilizer should be added to the potassium sulphate compound fertilizer with a concentration of 45 percent. The soil should be turned deep, the soil should be ridged and tested with a thermometer. The temperature in the greenhouse can reach 20 degrees in the greenhouse.
When planting begins in mid-December, the planting density of tomatoes should be controlled well, because there is not much sunshine time in early spring. If planting is too dense, photosynthesis is mutually inhibited. Pay attention when it is sunny or when the temperature is high at noon. Remove the shed to allow air to circulate. When it is cloudy, you can't suffocate the shed all day. Open the shed for short-term ventilation.
Technical point three: management
If the temperature is very low when planting, cover the greenhouse with a straw curtain, so as to prevent the heat in the shed from being too fast, and then open the curtain when the day is warm. When the tomato is flowering, it is the most critical stage in the management process. When the flowering is carried out, the greenhouse temperature should be controlled above 25 degrees, and the temperature difference between day and night is controlled within ten degrees. Temperature and illumination are important factors affecting tomato coloring. Low and short sunshine will make the tomato color uneven, and the selling is not good. This is why many people reflect the early spring tomato blue color.
In the early spring, the wind is large, and it is necessary to reinforce the greenhouse. In order to avoid the tomato branches falling softly when the wind is strong, the tomatoes should be fixed by the method of tying branches. After the tomatoes are harvested, the tomatoes are topdressed. The application of the foliar fertilizer helps the fruit grow and color. The topping is carried out, and the fruit is grown on the main branch as much as possible, and the result is better on the main branch.
The above is the multi-layer cover cultivation technique of tomato shed in the early spring season organized by Huinong. The tomatoes in the early spring season are sold at a higher price and the benefits are better. The growers can plant the early spring tomatoes according to their actual conditions.
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