To make eggplant harvesting for many years in a year, the old strain of eggplant can be used to continue cultivation. Cut off the aerial parts to promote lateral bud development and grow into new plants. Planting for one year can make it grow for many years and harvest it continuously for many years. Its cultivation techniques are as follows:
First, soil fertigation
More than 7,000 kilograms of soil-fertilizer per mu, 50 kilograms of phosphate fertilizer and ternary compound fertilizer, and deep-buried into the soil.
Second, timely transplanting
In late September, all the old branches of eggplant in Daejeon are cut off, leaving only 10-15 cm in height, and then transplanted into the greenhouse (if you grow in a greenhouse, you don't need to move and pruning directly). Generally covered with plastic film moisture insulation, the use of large-scale row cultivation method, a large row of 80 cm, a small row spacing 40 cm, 50 cm spacing, planting about 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 shoots have germinated and gradually grow into small plantlets, the temperature in the shed is appropriately reduced, ventilation is started at 25°C during the day, and can be reduced to 15°C at night, so that the time for hardening the seedlings is maintained for 7-10 days. Eggplant seedlings have more requirements for nitrogen fertilizer, and can apply 20-30 kg of nitrogen fertilizer per acre with watering, and timely cultivating loose soil after pouring. Seedling period can be sprayed 2% of the superphosphate solution 1-2 times, nitrogen, phosphorus and potassium with appropriate, adequate supply.
Fourth, the results of pre-management
The watering is mainly controlled, with less irrigation and more loose soil. Especially during the flowering of the door, the soil moisture cannot be too high. After the fruit is set on the door, the temperature of 28°C-30°C is maintained for more than 5 hours during the day, and the vent is closed when the temperature drops below 25°C in the afternoon, and the temperature is controlled at 13°C-18°C during the night. Before and after the fruit is set on the door, keep two branches and timely remove other axillary buds on the main stem. Appropriate soil is about 10 cm high. In addition, the results of the previous 2,4-D flower, only pedicel or flower center, do not sprinkle liquid on the leaves.
V. Results of the period of management
7-8 days pouring 1 water, combined with watering every time the top of 15 acres of urea and potassium nitrate or potassium sulfate 6-7 kg, combined with water flushing, can also be sprayed 0.5% of the urea solution later in the 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 noon 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°C-30°C during the day. When the temperature is higher than 32°C, it is timely ventilated and dehumidified. The night temperature is controlled at 15°C-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.
Eggplants can be continuously harvested after the shelter is removed. This stage mainly strengthens the control of pests and diseases and drainage in the rainy season. Until the upper branches were cut off in late September, other management methods were the same as last year, so that they could be cultivated continuously for 3-5 years.
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