There is a wide variety of vegetables suitable for planting in greenhouses, which can be flexibly selected according to seasons, climate conditions, and market demand. Overall, leafy vegetables, eggplants, melons, and some high-value specialty vegetables are the mainstream choices in current facility agriculture, which can achieve off-season supply and improve economic benefits.

1、 Recommend suitable varieties for greenhouse cultivation based on vegetable categories

1. Leafy vegetables (short growth cycle, strong cold resistance)

Suitable for year-round crop rotation, especially for winter and early spring planting:

Spinach: resistant to low temperatures, can grow above 5 ℃, and has high benefits when planted closely

Lettuce: Both loose leaf and heading varieties are suitable, with a suitable temperature of 15-20 ℃ and stable market demand

Rapeseed/Shanghai green: can be harvested in 40-50 days, with good adaptability, suitable for close planting and fast harvesting

Chrysanthemum, oilseed rape, celery: grow well in a cool environment, with few pests and diseases, and easy management

2. Solanaceous fruits (requiring insulation and temperature control, suitable for heating greenhouses)

High economic benefits, it is the "main force" of off-season listing:

Tomatoes: Choosing low-temperature tolerant varieties such as "Jinpeng No.1" can achieve winter cultivation, with a yield of 12000 to 18000 kilograms per mu

Chili/colored pepper: The temperature at night should be maintained at 10 ℃ or above, suitable for precise control in intelligent greenhouses

Eggplant: prefers warmth and good insulation, can be planted all year round in a sunlight greenhouse

3. Melons (requiring sufficient light and humidity control)

Proper management can achieve high productivity and high returns:

Cucumber: requires support for vine propagation, controllable humidity in the greenhouse, and a 30% higher yield of commercial fruits than in the open field

Watermelon and cantaloupe: Off season planting and harvesting have high prices, and there have been successful cases in Shouguang, Shandong and other places

Zucchini: resistant to low temperatures, yields many fruits, and performs well in early spring greenhouse planting

4. Beans and rhizomes

Green beans (green beans) and Dutch beans: It is necessary to ensure sufficient light. Dutch beans have strong cold resistance and are suitable for planting in autumn and winter

White radish, carrot, and lettuce: resistant to storage, stable in the market, and greenhouse cultivation can avoid freezing damage and bolting

5. High yield specialty vegetables (suitable for suburban leisure agriculture)

Strawberries: Elevated cultivation+off-season listing, picking price of 30-80 yuan/jin, net profit per mu of 150000 to 300000 yuan

Ice cold dishes: cold resistant, unique taste, suitable for high-end catering channels, outstanding economic benefits

Purple yam: rich in anthocyanins, priced three times higher than regular yam, suitable for the health market

2、 Suggestions for greenhouse planting in different seasons

|Seasons | Recommended Crops | Key Management Points|

|Winter | Spinach, lettuce, rapeseed, garlic sprouts, chives | Mainly keep warm, with a temperature not lower than 8-10 ℃ at night, and reduce watering frequency|

|Early spring | Tomatoes, eggplants, chili peppers, cucumbers | To prevent the "late spring cold", prepare warming blocks and two layers of film in advance|

|Summer | Watermelon, cantaloupe, cowpea, pumpkin | Pay attention to ventilation and cooling to prevent high temperature obstacles|

3、 Key technical points for improving efficiency

Variety selection

Priority should be given to selecting varieties that are resistant to low temperature and weak light, as well as strong stress resistance, such as "bolting tolerant lettuce" and "cold resistant tomato".

Environmental regulation

Temperature: 22-30 ℃ during the day, not lower than 10-15 ℃ at night

Lighting: Regularly clean the greenhouse film and use reflective curtains to enhance light transmission

Humidity: Promote subsurface drip irrigation, ventilation and moisture removal to prevent gray mold disease

Water and fertilizer management

Adopting integrated water and fertilizer technology, following the principle of "small amount multiple times", focusing on nitrogen fertilizer during the growth period, and increasing the application of phosphorus and potassium fertilizers during the fruiting period.

Green prevention and control of pests and diseases

Using yellow and blue boards to lure and kill pests, combined with biopesticides to prevent early spring high incidence diseases such as powdery mildew and aphids.

Crop arrangement and multiple cropping index

Reasonable intercropping can improve land use efficiency, such as the "tomato → bitter gourd → zucchini" rotation mode, which achieves multiple crops per year.