Winter and Spring Eggplant Management Points in Greenhouse

It is relatively easy to cultivate eggplants in greenhouses in winter and spring, and the economic benefits are relatively high. It is one of the most important planting forms to address the market supply in early spring and early summer.

First, the colonization should be assaulted and planted on sunny days in the absence of wind conditions, planting seedlings at a spacing of 40 cm. When planting, planting the ditch or inside the hole first pour warm water, sit the water to plant the seedlings, after the water infiltration, cover the soil slightly, and then pour the seedling water. After the afternoon sun over a noon and then cover the soil, in accordance with the "crocodile exposed, eggplant no neck" planting depth, planting medlar is less than 1 cm below the ground as a good, colonization too shallow too deep are unfavorable to the seedlings. After the planting, a small shed is to be buckled.

Second, slow seedlings after planting as soon as possible to create seedlings to create conditions of high temperature and humidity, improve the indoor temperature of the shed to promote hair roots, to prevent seedlings snoring. For this reason, the greenhouse should be sealed during the seedling period without ventilation, and the small arch sheds must be tightened. The daytime temperature should be above 30°C and nighttime at 16-20°C. The ground temperature in the shed should not be lower than 15°C under normal conditions, such as overheating. Short ventilation at noon during the day. The start of growth of the heart leaves indicates that the seedlings have been slowed down. It takes approximately one week from planting to easing seedlings. After easing the seedlings, the cultivator seedlings are cultivated, and the cultivating seedlings are generally 2-3 times.

Third, the management of post-emergence management The key to management at this time is to improve the rate of fruit set in the eggplant, and to lay a foundation for promoting plant growth and development of the eggplant and above.

1, the temperature is mainly to increase the temperature during the day 28 ~ 30 °C, should not exceed 35 °C, 15 ~ 18 °C at night. This range allows the normal germination and pollen tube growth of eggplant pollen to normally elongate to complete the fertilization process. Pay attention to ventilation.

2. After water and fertilizer are planted for 7 days, pour the seedlings with water once, and then control the watering until fertilizer is applied to the door. When the door tomato grows to 3 to 4 centimeters in size, it starts to top-dressing and watering, under the film, under irrigation. Per mu of compound fertilizer 15 to 20 kg. Do not water as much as possible in January.

3. Within 2 days before and after flowering of the hormone, 2,4-D butylate is applied at a concentration of 25 mg/kg, and the treated corolla is gently removed after the fruit is large. To prevent the formation of the source of infection of gray mold.

Fourth, the results of the door when the eggplant growth phase timely release, cooling and cooling, daytime temperature is maintained at 22 ~ 30 °C, nighttime temperature 16 ~ 17 °C the middle of the night, the latter night 13 ~ 10 °C, the average temperature to maintain at 20 °C. Continuous high temperature or temperature is often above 30°C, which can cause stems and leaves to grow in length and affect the normal pollination of the eggplant, resulting in a large number of falling flowers. When the door grows to the size of a walnut, the fruit starts to expand rapidly and the fruit fertilizer should be promptly chased and the fruit should be poured. Each application of ammonium sulfate 10 ~ 15 kg or mature manure, cake fat and so on. When the eggplant and the four-door hoppers were inflated, the plant absorption peaked. Generally, one day water was poured about 7 days, and one fertilizer was applied about 15 days. Water should not flood irrigation. After the watering, the air is properly ventilated without affecting the temperature, and the humidity in the booth is reduced as much as possible.

5. After pruning and harvesting, the old leaves of the lower part will be removed. After the formation of the eggplant, the upper two outer branches will be cut off to form double branches, and so on. When the four-door bucket egg sits up and picks up the heart. Generally, 5-7 eggplants are left per plant. Fruit should be picked early, generally 25 days after flowering, eggplant bracts and fruit junctions where white or light green ring is about to disappear can be harvested.

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