Technology for growing cucumbers in vegetable greenhouses in winter 1. Selection of varieties.
Variety selection determines the yield and yield. It is recommended to use high-quality, high-product varieties such as local cucumber, Shanghai Yangxing cucumber, and Nongda 14th.
Second, nurture strong seedlings. ?
The sowing time of greenhouse cucumbers is generally from late December to mid-January, and greenhouses should be used to add greenhouses or greenhouse electric hotbeds or straw bioreactor greenhouse nursery. The seedling age is about 40-45 days, and the seeding rate is about 0.1 kg per mu. The method of raising seedlings is as follows: soak the seed in clean water and then put it in hot water at 55°C. The amount of water is 3 to 4 times that of the seed. Stir constantly. When the water temperature drops to about 30°C, then soak at room temperature. 1 to 2 hours for use. The plots that have not been planted with melon crops in recent years are selected as seedbeds, and the beds are leveled and soiled with water, and planted after 24 hours. Spread 0.2 kg per square meter of bed seedlings and cover with 2 cm of medicinal soil (50 kg of earth ash + 1.5 kg of calcium magnesium phosphate fertilizer + 0.15 kg of zeocin + 0.15 kg of thiophanate).
From sowing to cotyledon unearthed, it is necessary to maintain a high temperature, when the temperature is up to 15 °C, on the apron; when the temperature reaches 10 °C, the small arch shed to cover the straw in the evening. The specific temperature requirement is to maintain 25°C-30°C during the day and 20°C at night. After the seedlings are unearthed, the temperature is appropriately lowered. The temperature is about 25°C during the day and about 16°C at night. 4 to 5 days after sowing, the seedlings will be transplanted into the nutrient bowl, transferred to the live tree before transplanting, suitable high temperature and humidity, keep the seedbed within 25-30 °C, 3-4 days after the gradual cooling, control during the day at 20-25 °C, 14 at night -16°C to prevent leggy. Seedling soil is often kept moist, watering should be selected to be sunny, can be combined with 0.2% potassium dihydrogen phosphate +0.2% urea topdressing, adequate ventilation after application, promote strong seedlings.
Third, timely planting.
The greenhouse is covered with plastic mulches and straw drapes. From mid-February to early March, when the seedling age is 40-45 days, the plant height is 15-20 centimeters and there are 5-6 true leaves when planting. Generally, each row is planted with two rows of plants, with a row spacing of 40-60 cm, and 2500-2700 plants per mu (667 square meters).
Fourth, strengthen field management.
1, fertilizer and water management. In the first half of the planting period, the sorghum was applied to the base fertilizer, 2.5 tons of fertilizer was applied per mu, and 45 kg of compound fertilizer was applied. After the planting of a living plant, 1,000 kg of excrement was given per acre, and fertilizer was applied once again after 15 days. Cucumber grows quickly, and fertilizer and water supply must be timely. The fertilization method adopts the principle of thin-fertilized and small-scale multi-meals. Generally, two fertilizers are harvested once per harvest. Keep the soil moist throughout the growing season. After entering the melon period, according to soil moisture content, watering and irrigation once every 1-2 weeks. The amount of fertilizer used in the straw bioreactor greenhouse is 70% of the original.
2, the temperature control. After planting, it is necessary to maintain a high shelf temperature in order to ease the seedlings. After easing the seedlings, measures such as heat preservation, anti-freezing, ventilation and anti-hot burning are strengthened. Generally sunny days, when the temperature in the shed reaches 28-30 °C during the daytime; cloudy, appropriate ventilation, maintain the temperature around 20 °C, the night temperature 15 °C (not less than 10 °C), a small shed in the greenhouse on the straw and other Cover early cover to increase light. In general, small sheds were removed before the vines were introduced. In late April, the sheds were stripped of the sheds, and the top pellicles remained until the end of the harvest.
3, preserved flowers. During the initial flowering period, Baoguo Ling was sprayed with 100 times liquid to protect fruits or dilute 500 times with additive colorants to increase the yield and quality of the previous period.
Fifth, pest and disease control.
The main diseases are downy mildew, blight, wilt, and powdery mildew. We must implement paddy-upland rotations and give lime and other agricultural measures to prevent disease from occurring. In particular, attention should be paid to the early prevention and control of downy mildew. Usually greenhouse cucumbers begin to occur in the middle and late March. When the temperature rises to 20-24°C after the Qingming period, it can quickly become popular. Therefore, starting in mid-March, spraying with 25% carbendazim or 70% Antler or 58% 500% Rhodendron for 5-7 days; after the occurrence of downy mildew, 72% g of the therapeutic agent Dew 750 times or 69% Anke 600 times control. Rainy weather can use 45% chlorothalonil flue-curing agent 0.2 kg per mu, close the greenhouse shed in the evening, the next morning ventilation, and spray rotation. Insect pests are mainly locusts, which can be controlled with 7000 times Kangfu or twice net 2500 times.
Variety selection determines the yield and yield. It is recommended to use high-quality, high-product varieties such as local cucumber, Shanghai Yangxing cucumber, and Nongda 14th.
Second, nurture strong seedlings. ?
The sowing time of greenhouse cucumbers is generally from late December to mid-January, and greenhouses should be used to add greenhouses or greenhouse electric hotbeds or straw bioreactor greenhouse nursery. The seedling age is about 40-45 days, and the seeding rate is about 0.1 kg per mu. The method of raising seedlings is as follows: soak the seed in clean water and then put it in hot water at 55°C. The amount of water is 3 to 4 times that of the seed. Stir constantly. When the water temperature drops to about 30°C, then soak at room temperature. 1 to 2 hours for use. The plots that have not been planted with melon crops in recent years are selected as seedbeds, and the beds are leveled and soiled with water, and planted after 24 hours. Spread 0.2 kg per square meter of bed seedlings and cover with 2 cm of medicinal soil (50 kg of earth ash + 1.5 kg of calcium magnesium phosphate fertilizer + 0.15 kg of zeocin + 0.15 kg of thiophanate).
From sowing to cotyledon unearthed, it is necessary to maintain a high temperature, when the temperature is up to 15 °C, on the apron; when the temperature reaches 10 °C, the small arch shed to cover the straw in the evening. The specific temperature requirement is to maintain 25°C-30°C during the day and 20°C at night. After the seedlings are unearthed, the temperature is appropriately lowered. The temperature is about 25°C during the day and about 16°C at night. 4 to 5 days after sowing, the seedlings will be transplanted into the nutrient bowl, transferred to the live tree before transplanting, suitable high temperature and humidity, keep the seedbed within 25-30 °C, 3-4 days after the gradual cooling, control during the day at 20-25 °C, 14 at night -16°C to prevent leggy. Seedling soil is often kept moist, watering should be selected to be sunny, can be combined with 0.2% potassium dihydrogen phosphate +0.2% urea topdressing, adequate ventilation after application, promote strong seedlings.
Third, timely planting.
The greenhouse is covered with plastic mulches and straw drapes. From mid-February to early March, when the seedling age is 40-45 days, the plant height is 15-20 centimeters and there are 5-6 true leaves when planting. Generally, each row is planted with two rows of plants, with a row spacing of 40-60 cm, and 2500-2700 plants per mu (667 square meters).
Fourth, strengthen field management.
1, fertilizer and water management. In the first half of the planting period, the sorghum was applied to the base fertilizer, 2.5 tons of fertilizer was applied per mu, and 45 kg of compound fertilizer was applied. After the planting of a living plant, 1,000 kg of excrement was given per acre, and fertilizer was applied once again after 15 days. Cucumber grows quickly, and fertilizer and water supply must be timely. The fertilization method adopts the principle of thin-fertilized and small-scale multi-meals. Generally, two fertilizers are harvested once per harvest. Keep the soil moist throughout the growing season. After entering the melon period, according to soil moisture content, watering and irrigation once every 1-2 weeks. The amount of fertilizer used in the straw bioreactor greenhouse is 70% of the original.
2, the temperature control. After planting, it is necessary to maintain a high shelf temperature in order to ease the seedlings. After easing the seedlings, measures such as heat preservation, anti-freezing, ventilation and anti-hot burning are strengthened. Generally sunny days, when the temperature in the shed reaches 28-30 °C during the daytime; cloudy, appropriate ventilation, maintain the temperature around 20 °C, the night temperature 15 °C (not less than 10 °C), a small shed in the greenhouse on the straw and other Cover early cover to increase light. In general, small sheds were removed before the vines were introduced. In late April, the sheds were stripped of the sheds, and the top pellicles remained until the end of the harvest.
3, preserved flowers. During the initial flowering period, Baoguo Ling was sprayed with 100 times liquid to protect fruits or dilute 500 times with additive colorants to increase the yield and quality of the previous period.
Fifth, pest and disease control.
The main diseases are downy mildew, blight, wilt, and powdery mildew. We must implement paddy-upland rotations and give lime and other agricultural measures to prevent disease from occurring. In particular, attention should be paid to the early prevention and control of downy mildew. Usually greenhouse cucumbers begin to occur in the middle and late March. When the temperature rises to 20-24°C after the Qingming period, it can quickly become popular. Therefore, starting in mid-March, spraying with 25% carbendazim or 70% Antler or 58% 500% Rhodendron for 5-7 days; after the occurrence of downy mildew, 72% g of the therapeutic agent Dew 750 times or 69% Anke 600 times control. Rainy weather can use 45% chlorothalonil flue-curing agent 0.2 kg per mu, close the greenhouse shed in the evening, the next morning ventilation, and spray rotation. Insect pests are mainly locusts, which can be controlled with 7000 times Kangfu or twice net 2500 times.
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