Technical points of eggplant field management

Light: eggplant likes light, and light should be guaranteed in the process of growth. Temperature: close the vents after planting and let the temperature rise to about 35 ℃. It can return to normal after survival, and the temperature difference between day and night should not be too large. Humidity: the amount of water should not be too large, ventilation and dehumidification in time after watering. Pruning: pruning after fruit setting promotes branching, retains 3 main heads, and removes all the other lateral branches. Fertilization: eggplant likes fertilizer, and nitrogen fertilizer or thin farm manure can be applied during the expansion period. Diseases and insect pests: actively prevent and control diseases and insect pests.

1. Lighting requirements

Eggplant is more like light, in order to meet the light needed for eggplant growth, we should keep the greenhouse film clean, so as to improve the light transmittance of the film.

Second, temperature requirements

1. After the eggplant is planted, in order to increase the temperature in the shed, all vents should be closed and the temperature should be raised to about 35 ℃. After the eggplant survives, the eggplant can grow normally, and the temperature can be stabilized at about 28-30 ℃ during the day.

2. If the temperature is above 30 ℃, it can be properly ventilated, which is more beneficial to the growth of eggplant. For example, when the temperature is lower than 18 ℃ during the day, there is no need for ventilation, and the temperature difference between day and night should not be too large. It should be kept at about 13-15 ℃ at night, which can help eggplant to accelerate its growth.

3. Suitable humidity

Eggplant greenhouse planting must control the amount of water, should not be excessive, after each watering should be timely ventilation and moisture drainage, so as to avoid the increase of air humidity in the greenhouse.

IV. Rational pruning

Generally, after setting fruit, the axillary buds of the lower leaves of eggplant are retained to form branches, and then the main stem and two side branches form three main heads. In order to avoid nutrient loss, all the other side branches can be removed. At the same time, in order to improve the effect of ventilation and light transmission, only two robust leaves are retained in the lower part of each growing eggplant, and all other leaves are removed, which is also conducive to reducing the incidence of diseases.

V. rational fertilization

Eggplant likes fertilizer, which can be carried out in combination with mid-tillage after slow seedling, about 100 kg of farm manure per mu, nitrogen fertilizer or thin farm fertilizer can be applied once during the expansion period of eggplant, for longer eggplant, in order to prolong leaf age to promote fruit growth, topdressing should be carried out properly.

VI. Prevention and control of diseases and disasters

1. The common diseases and insect pests of eggplant are eggplant brown stripe, eggplant cotton blight, red and white spiders. 65% Dysen zinc wettable powder 500 times solution, or 58% Ruidu manganese zinc wettable powder 500 times solution, or 70% chlorothalonil wettable powder 500-600 times liquid spray can be used to control the disease.

2. In the adult and fruiting stage, to control eggplant brown stripe, spray 75% chlorothalonil wettable powder 600x solution to control red spider, or use 0.9% Ji Chong mite EC 1500-2000 times, or 15% paracetamol EC 1000-1500 times, or 15% Daben EC 1000-1500 times, and so on.