Management points after tomato topping
At present, after the autumn, the tomato has been sitting on 6~7 ear fruits. In order to promote fruit development, farmers have taken measures to top out the topping. After the topping of the tomato topping, the following points should be noted in management.
One is to increase the light and promote fruit development. In the case of frost and windy weather, cover the grass with a floating film. Generally, when the sun comes out before 7 o'clock in the morning, the drafting is carried out, and the air outlet is closed before 4 o'clock in the afternoon, and the grass is covered before 5 o'clock in the afternoon. Before the cold wave strikes, the anti-light curtain will be hung on the wall behind the greenhouse to enhance the illumination in the shed. Generally, after the topping of the tomato topping, the lower fruit is in the expansion period or the color changing period. By keeping the light-increasing measures, the daytime temperature is maintained at 28~30°C, and the night temperature is maintained at 15~17°C, which is beneficial to the transportation of photosynthetic products. Coloring is also good.
Second, the supply of fertilizer and water is sufficient to avoid premature aging of plants. As the ground temperature in the shed decreases, it will affect the water absorption and fertilizer absorption capacity of tomato roots. After the topping of the tomato topping, the nutrients needed for fruit growth and development are increased. In order to avoid premature senescence of the plant, the supply of fertilizer and water should be strengthened, and the functional fertilizer for curing the root system should be alternately applied with the water-soluble fertilizer, and the boron-magnesium-zinc foliar fertilizer should be sprayed at the same time. Sodium nitrophenolate and other drugs and fertilizers.
The third is to take various measures to prevent the occurrence of diseases. After the topping of the tomato topping, in addition to picking up the residual flowers, the medicament is essential for preventing diseases. The key point is to prevent gray mold. You can use the mildew bacteria to clean the smoke at night, or use mist, dusting, etc. Way to spray control. Prevention of leaf mold and bacterial spot disease cannot be ignored. Prevention and control of leaf mold, selection of polymycins, difenoconazole, etc., prevention and treatment of bacterial spot disease, the choice of acacia copper, agricultural streptomycin sulfate, leaf cumin and so on.
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