Management of eggplant in slow seedling stage after setting value of eggplant in greenhouse in cold season

Eggplant management in greenhouse

First, temperature and humidity adjustment. The slow seedling stage of eggplant coincides with the cold season, so it is important to increase the temperature in the greenhouse. Keep 28 ℃ 30 ℃ during the day and 15 ℃ at night to promote its early seedling retardation. After seedling retardation, the greenhouse temperature was maintained at 26 ℃ 28 ℃ during the day, ventilated over 30 ℃, and dropped to 25 ℃ off the air outlet. At night, the greenhouse temperature was not lower than 12 ℃. Generally, the greenhouse temperature was maintained at 13 ℃ and 17 ℃. It depends on the weather, grass and plastic film. The humidity in the greenhouse should be 70%, 80%, and the soil water content should be 15%, 18%. When the greenhouse is dry, the eggplant grows slowly, and the humidity is too high, which can easily lead to the spread of the disease.

Second, light adjustment. Polyethylene drip-free film is generally used in eggplant shed. In order to improve the light transmittance of greenhouse film, 100 grams of flour to 15 kilograms of water can be used to spray inside the greenhouse film with a sprayer once a week to reduce dew and improve light intensity.

Third, fertilizer and water management. When the door eggplant begins to expand and grow to the size of the egg, watering the shed, watering the first water in the sunny morning, in order to fill the ditch is appropriate, pay attention to raising the temperature and dehumidification, and pour the second water half a month later. Starting from watering the second water, it is necessary to apply fertilizer and water according to the growth of eggplant. Combined watering, 15 kg of diammonium phosphate, 10 kg of urea, 0.5 kg of boron and magnesium fertilizer, 1 kg of potassium dihydrogen phosphate and 100 kg of rotten chicken manure were applied each time.

Fourth, plant adjustment. In the cultivation of eggplant in warm winter greenhouse, the method of two branches of hanging seedlings (one plant and two hanging ropes) was adopted to retain the main branch and a strong side branch of the first leaf axil under the first inflorescence, and the other side branches were erased, after entering the main sealing line of eggplant in the middle of fruiting, the yellow leaves of the lower old leaves were removed in time and buried deep outside the shed. Each inflorescence leaves one fruit, the rest of the buds are removed, two branches of each plant grow side by side, and the seeds are wiped out in time.

Fifth, smear 2jue 4murD to protect flowers and fruits. In order to improve the fruit setting rate of eggplant in greenhouse, 2Jet 4murD is generally used to wipe flowers. Use time for eggplant flowers budding or just blooming, smear today and bloom the next day. The concentration of 20-30ppm is used. When the temperature is low, the concentration is high. When the temperature is high, the concentration decreases. Be careful not to splash the liquid on the leaves or stems to avoid drug damage, and do not have too much concentration to prevent fruit cracking.