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Management of eggplant after planting in winter greenhouse
Eggplant is a short-day crop that is warm, heat-resistant, water-resistant, and frost-free. To strengthen management after planting. First, the adjustment of temperature and humidity. After the eggplant is planted, the slender seedling period is in the cold season, and the emphasis should be placed on raising the shelf temperature. Keep 28°C～30°C during the day and keep 15°C～20°C during the night, so as to promote the early seedlings. After the seedlings are soothing, the temperature in the greenhouse is maintained at 26°C to 28°C during the day, ventilation is allowed at more than 30°C, and the temperature is reduced to 25°C. The temperature at night is not lower than 12°C, generally 13°C to 14°C, and the temperature at night is 15°C. ~17°C is the best. To look at this range, we can see the increase and decrease of weather and plastic film. The humidity in the greenhouse is 70% to 80%, and the soil moisture content is 15% to 18%. When the greenhouse is dry, the plants grow slowly; if the humidity is too high, the disease can easily spread. Second, light regulation. Eggplant sheds generally use polyethylene drop-free membranes. In order to increase the transmittance of the film, 100 grams of flour can be applied to 15 kilograms of water, and the film is sprayed on the film inside the sprayer once a week to reduce the condensation of the film and improve the light intensity. Third, fertilizer and water management. When the door eggplant begins to grow and grows to the size of an egg, it is watered in a shack, and the first water is poured on a sunny morning. It is advisable to pour a small ditch. Pay attention to warming the water and pour the second water after half a month. From the beginning of pouring the second water, the fertilizer should be poured according to the growing trend of the plant. In combination with watering, 15 kg of diammonium phosphate, 10 kg of urea, 0.5 kg of boron-magnesium fertilizer, 1 kg of potassium dihydrogen phosphate, and 100 kg of decomposed chicken manure are used each time. Fourth, plant adjustments. In winter greenhouses, eggplants were cultivated using a two-string slinging method to retain the main branch and a stronger lateral branch of the first leafhopper of the first inflorescence. The remaining lateral branches were wiped off and entered the middle of the result. After the plants were sealed, the yellow leaves of the old leaves were removed in time to bring them deep outside the shed. Each inflorescence leaves only one fruit, and the rest of the buds are removed. Two branches of each plant grow side by side. At the same time, they must be wiped off in time. Fifth, smear 2,4-D preserved fruit. In order to increase the eggplant fruiting rate in greenhouses, 2,4-D flowers are generally used. The time of use is banish or just open, it is advisable to apply for flowering the next day today. The concentration is 20 to 30 ppm. When the temperature is low, a high concentration is used, and when the temperature is high, the concentration is decreased. Note that the 2,4-D liquid should not be splashed on the leaves or stems to avoid phytotoxicity or excessive concentrations to prevent cracking. China Agricultural Network Editor