How to grow cucumber in greenhouse?

1. Cultivation of strong seedlings: Generally, the sowing period of cucumber in greenhouse is from late February of 65438 to mid-October of/kloc-0 of 65438. Seedling should be raised in greenhouse with small arch shed, greenhouse electric hotbed or straw bioreactor greenhouse. The seedling age is about 40 ~ 45 days, and the seedbed should be properly fertilized to ensure ventilation in the shed and promote healthy seedlings.

2. Timely planting: the greenhouse is covered with a small arch shed and cultivated with plastic film and straw curtain. From mid-February to early March, when the seedling age is 40-45 days, the plant height is 15-20 cm, and there are 5-6 real leaves, plant it. Generally, two rows are planted in each border, the row spacing is 40 ~ 60 cm, and 2500 ~ 2700 plants are planted every 667 plants.

3. Strengthen field management: fertilizer and water management. Half a month before sowing, furrow was opened in the border to apply base fertilizer, and 2.5 tons of farm manure and 45 kilograms of compound fertilizer were applied per mu. After planting live trees, apply 1000 kg of human excrement per mu, and topdressing again after 15 days. Cucumber grows fast, and the supply of fertilizer and water should be timely. Fertilization method adopts the principle of "small amount and multiple meals", which is usually topdressing once every two harvest periods. Keep the soil moist throughout the growing season. After entering the full flowering period, according to the soil water content, water and irrigate once every 1 ~ 2 weeks. Temperature control. After planting, it is necessary to maintain a high greenhouse temperature in order to slow down the growth of seedlings. Measures such as heat preservation, anti-freezing, ventilation and anti-scorching should be strengthened after seedling delay. Generally, when the temperature in the shed reaches 28 ~ 30℃ during the day, it will be ventilated on sunny days; Proper ventilation is required on cloudy days, and the temperature is kept at about 20℃. At night, the greenhouse temperature is 15℃. Raise flowers and fruits. Spraying 100 times of Baoguoling solution at the initial flowering stage to protect flowers and fruits, or spraying 500 times of diluted colorant to improve the yield and quality in the early stage.

4. Pest control: The main diseases are downy mildew, blight, blight and powdery mildew. Agricultural measures such as paddy-upland rotation and spreading quicklime should be implemented to prevent diseases. Pay special attention to the early prevention and treatment of downy mildew. Cucumber in greenhouse generally began to occur in the middle and late March, and it can quickly become popular when the temperature rises to 20 ~ 24℃ after Qingming. Therefore, from mid-March, spraying 500 times of 25% carbendazim every 5 ~ 7 days. In rainy weather, you can use 0.2 kg of 45% chlorothalonil fumigant per mu, close the greenhouse at night and ventilate the next morning. Insect pests are mainly aphids, which can be controlled by washing aphids and lice with 2500 times liquid.