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Eggplant continuous cultivation techniques
Continuing cultivation of eggplant is the use of old strains of eggplant, cutting off the aerial parts of the eggplant, promoting the development of lateral buds and growing new plants. Planting for one year can make it grow for many years and harvest it continuously for many years. The cultivation techniques are as follows. First, set up fertilizer. More than 7000 kilograms of soil-fertilizer per acre, more than 50 kilograms of phosphate fertilizer and ternary compound fertilizer, and deep into the soil. Second, timely transplanting. In late September, all the old branches of eggplant in Daejeon will be cut off, leaving only 10-15 centimeters of earthworms, and then transplanted into winter greenhouses or in single-slope greenhouses (if not grown in winter greenhouses). , pruning can be directly), generally covered with plastic film insulation and moisturizing, the use of large and small rows of cultivation methods, a large row spacing 80 cm, a small row spacing 40 cm, 50 cm spacing, planting 2500 per acre. Quickly pour 1 small water after transplanting, and plough loose soil in time. The film is covered in mid-October and will be available in mid-November. Third, seedling management. After the lateral buds have germinated and gradually grow into small plantlets, the temperature in the shed is appropriately lowered, ventilation is started at 25°C during the day, and can be reduced to 15°C during the night, so that the time for hardening the seedlings is maintained for 7 to 10 days. Eggplant seedlings require high nitrogen fertilizer. Apply 20-30 kg of nitrogen fertilizer per acre with watering, and plough loose soil immediately after pouring. Seedling period can be sprayed 2% of the superphosphate solution 1-2 times, nitrogen, phosphorus, potassium with appropriate, adequate supply. Fourth, the results of the previous period. The management of watering is mainly controlled, with less irrigation and more loose soil. Especially during the flowering of the gate, the soil moisture cannot be too high. After the fruit is set on the door, the temperature of the shelf at 28-30°C is maintained for more than 5 hours during the day. When the temperature drops below 25°C in the afternoon, the air vent is closed and the temperature is controlled at 13-18°C during the night. Before and after the fruit is set on the door, two podlike branches are kept and other axillary buds on the main stalk are promptly removed. Appropriate soil, 10 cm high. In addition, the results of the previous use of 20-30ppm 2.4-D dip, only pedicel or flower center, do not sprinkle liquid on the leaves. Fifth, the outcome of the period. 7-8 days, pouring 1 times of water, topdressing 15 kg of urea per acre and 6-7 kg of potassium nitrate or potassium sulfate, combined with water irrigation, spraying 0.5% urea foliar fertilizer. Pruning in time to destroy the old leaves and yellow leaves of the base. Mid-term results, select sunny morning, watering alternately. Close the greenhouse after watering, use the afternoon to raise the temperature of the greenhouse, so that the night temperature in the greenhouse is not lower than 15°C, and the temperature is maintained at 25-30°C during the day. When the temperature is higher than 32°C, it is timely ventilated and dehumidified. At night, the temperature is controlled at 12-18°C, and the temperature difference between day and night is 10°C. At the later stage, the greenhouse vents and door and window films can be rolled up. When the night temperature is not lower than 15°C, the vents are not closed, ventilation is provided day and night, and the top film of the greenhouse can be removed after July. Six, management after withdrawal. Eggplant can be continuously harvested. This stage is mainly to strengthen pest control and drainage in the rainy season. Until the upper branches were cut in late September, other management methods were the same as last year, so that they could be cultivated continuously for 3 to 5 years.