Greenhouse vegetables can grow all kinds of vegetables off-season, which can effectively improve the economic benefits of vegetable planting. Now it’s autumn, so how to plant and manage autumn greenhouse vegetables? Here is an introduction to the management of autumn greenhouse vegetables.

1. New shed building

When building a new solar greenhouse or plastic greenhouse, it is recommended to control the greenhouse within 60-100 meters in length and 4-5 meters in height, the plastic greenhouse at 3-4 meters in height, and the span of the shed within 8-12 meters. The orientation of the shed is recommended to be about 5-6 degrees from the north to the south or slightly west from the south. For the lighting angle, it is recommended to control at about 25 degrees, and the elevation angle of the rear house should be controlled at about 45 degrees. A non-drip membrane with good permeability, and also pay attention to the design of the top and waist vents according to the actual situation.

2. Variety selection

In autumn and winter, the temperature is low, the climate is cold, the light is short, and the humidity in the shed is high. Whether it is sowing seedlings or transplanting and planting, you should choose those with low light demand, good low temperature tolerance, high humidity tolerance, strong cold and frost resistance, and fertility Types of fruits and vegetables that are relatively short, high-yield and suitable for the local market, such as green peppers, celery, cucumbers, tomatoes, etc.

3. Planting method

Autumn or overwintering crops should be cultivated in a timely manner according to the stubble and the market time of the morning and evening. When planting, ridging and mulching and drip irrigation under the film should be used. Sparse planting, not too high planting density, in order to ensure that the seedlings, the soil moisture and temperature are stable, and also reduce the occurrence of various diseases and insect pests.

4. Temperature and humidity management

The temperature environment most suitable for the growth and development of crops in autumn greenhouses is generally around 22-30 degrees during the day, 15-22 degrees at night, and the temperature difference between day and night is about 8-10 degrees. When watering the greenhouse in autumn, you should look at the sky, the ground, and the seedlings. On the one hand, you should water scientifically and flexibly according to the growth period of the crops, and maintain a reasonable soil humidity and water supply. On the other hand, you should use vents for reasonable ventilation. To dehumidify, on the other hand, after watering or concentrated precipitation, it is necessary to drain water and cultivate the soil in time to prevent excessive soil moisture from suffocating or suffocating crop roots due to hypoxia.

5. Light management

For greenhouses with serious aging of the shed film, we should promptly replace it with a new, strong permeability film. At the same time, we must frequently clean the accumulated dust and debris on the shed film to ensure that the shed film is always clean, so as to increase the crops in the shed. The amount of lighting. In the autumn, continuous rainy weather is prone to occur. On the one hand, we need to add supplementary lights in the shed to supplement the light. On the other hand, we need to spray nutritional and functional foliar fertilizers such as potassium dihydrogen phosphate and amino acid foliar fertilizer, and an appropriate amount of Gibberellin, etc., to reduce the adverse effects of insufficient environmental light on crops.

6. Pest control

Autumn is a period of high incidence of various diseases and insect pests. At this stage, the incidence rate is relatively high and the major types of pests and diseases are: whitefly, aphids, spider mites, whitefly, cutworm, plutella xylostella, cabbage caterpillar, Cabbage borer, Liriomyza, etc.; diseases include powdery mildew, virus disease, gray mold, anthracnose, downy mildew, blight, stem rot, fusarium wilt, bacterial wilt, soft rot and so on. There are many ways to prevent and control diseases and insect pests, which can combine biological control (releasing natural enemies, etc.), agricultural control (planting and cultivation management, etc.), physical control (hanging yellow sticky oil boards, black lights, etc.), and chemical control (spraying drugs).

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