How to plant early spring tomatoes? Multi-layer cultivation technique of tomato in early spring greenhouse
In recent years, with the improvement of people's living water products, the demand for vegetables is getting bigger and bigger. In order to meet the needs of people's various vegetables, this year, we have developed new cultivation methods such as greenhouse cultivation and soilless planting. Then, how do you plant early spring tomatoes? The following small series will tell you in detail about the multi-layer cultivation techniques of tomato in early spring.
    1 Choose excellent varieties, timely seedlings
The early-maturing and low-temperature resistant variety Sufen No. 8 was selected. This variety of pink fruit, moderate fruit shape, in line with local consumption habits, is a fine variety planted in Rugao. Sowing in mid-September, 20 days after sowing, timely seedlings, seedling size is 12 cm × 12 cm, cover the shading nets with greenhouses and small arch sheds, properly control the water, prevent the seedling period from being long, and pay attention to the seedling stage aphid.
    2 Apply sufficient base fertilizer and rational close planting
In mid-November, the middle shed was set up, and the fermented manure was applied as a base fertilizer of 1 500 kg/hm 2 , and a 45% potassium sulphate compound fertilizer was applied to 1 875 kg/hm 2 . Subsequently, tillage and ridges were carried out to ensure that the ridge height was 25 cm, the ridge surface width was 75 cm, and the furrow width was 35 cm. The temperature in the shed was 18~20 °C and the shed was shed for 3~5 days. Planted in mid-December, with a row spacing of 40 cm and a plant spacing of 30 cm. After planting, the water is poured through the living water. If it is sunny when the wind is released, the middle shed and the small shed will be removed; if it is cloudy, only the small shed will be ventilated.
    3 Field management
On the evening of planting, use a straw curtain to seal the perimeter of the greenhouse to increase the greenhouse temperature. After 1 week, the straw curtains were uncovered on sunny days, and the light was directly exposed to increase the temperature and promote the slow seedlings. When flowering, tomato is more sensitive to temperature, especially from 15 days before flowering to 3 days after flowering, and the greenhouse temperature is controlled. During the result, the daytime temperature is preferably controlled at 26 °C, the nighttime temperature is controlled at 16 °C, and the temperature difference between day and night must not exceed 10 °C. In the result temperature management is the most critical, the temperature is too low, the fruit grows slowly; the temperature is too high, which is not conducive to fruit coloration.
In the first half of February of the following year, the amount of air was increased, and the small shed was removed in time, and the branches were tied and the whole stem was used. At the flowering stage, spray with 30 mg/kg of anti-falling pigment, and treat each layer of inflorescence once. After fruit setting, the fruit should be thinned out in time, and each dish will have 3~4 fruits. After stabilizing 4 spikes, leave 2 leaves to pick the top. When the first ear grows to the size of the egg, the top dressing is sprayed with 0.5% urea water and 0.3% potassium dihydrogen phosphate. When the first spike begins to change color, it is coated with ethephon 200 mg/kg to promote early harvest.
    4 timely harvest
In order to be listed as soon as possible, tomatoes can be picked during discoloration, and fresh tomatoes should be harvested during the ripening period. At this time, the fruit is most nutritious. If the tomato needs to be transported over long distances, it will not be watered 3 days before picking to reduce moisture content and increase dry matter for storage and transportation. After picking the tomato fruit, the deformed fruit, the damaged fruit, and the diseased fruit are removed, and the fruit stalk is removed to avoid puncturing the fruit during shipment. Handle as much as possible, and sort the tomatoes according to their size. In addition, note that the picking time of tomatoes should be arranged in the sunny days with low temperature. In case of high temperature picking, it must be spread after harvesting, and then placed in the basket after the temperature of the fruit is lowered.
Tomato is a very popular fruit and vegetable, which has a good prospect of planting. The above is a multi-layer cultivation technique of tomato in early spring, which can be used by farmers.
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