In greenhouses, early colonization of sweet peppers should be planted at a temperature of 12°C within 10 cm of the greenhouse. In the North China area, the middle and small sheds or the double-covered cultivars are usually planted in the middle and early March. The management after planting mainly includes temperature management and water and fertilizer management.
First, the temperature management in order to promote the slow spring seedlings, planting generally boring 5 to 7 days, the temperature within the shed does not exceed 35 °C does not release the wind, in order to improve the shed temperature, promote seedlings early rooting, early seedlings. If the film is covered with a multilayer film, the insulation film (two curtains) should be uncovered during the day to facilitate light transmission and increase the temperature of the ground. About a week later, the leaves of the seedlings turn green, and the heart leaves begin to grow. The seedlings can be poured with water, and the water gradually begins to spread. It is maintained at 25°C to 28°C during the daytime and above 17°C during the night.
After mid-April, when the temperature of the shed increases to above 25°C, a small amount of bleed should be performed. When the air is released, the shed film is uncovered from the leeward side, and the management of the air outlet is always observed in the windy weather. The wind direction is changed and the air outlet is changed to the leeward surface. The tuyere is gradually closed when the temperature in the booth falls below 20°C. When the temperature is above 15°C in the night shed, the ventilation openings are no longer closed at night and ventilation can be performed day and night. In mid-May, choose to remove the shed film in cloudy evening to avoid wilting. The removed film is folded and placed in a cool place for later use.
Second, water and fertilizer management After planting water, planting water can be cultivated for 2 to 3 days to increase ground temperature, improve soil ventilation, and promote seedling growth. About one week after planting, the seedlings were irrigated and then entered into the cultivator seedlings. After most of the plants were peppered (there were walnuts), the seedlings were completed and the watering fertilizer was started. Afterwards, the soil in the greenhouse is often kept moist. Generally, the water is poured every 7 days or so, and the water is poured into the water for 4 to 5 days. Watering should be carried out in the sunny morning. The amount of watering should not be too large.
The bell pepper is fat and fat. After the fruits are set, the top dressing is started. Each time the water is poured 2 times per acre, the quick-acting nitrogen fertilizer is 15-20 kg per acre, and the application of phosphorus-potassium fertilizer is accompanied by 10 kg of diammonium phosphate and 15 kg of potassium sulfate.
In addition to the normal dressing in the middle and late growth stages, a mixture of 0.1% to 0.2% potassium dihydrogen phosphate and 0.1% urea can be sprayed once a week. Before planting ridges, soil should be cultivated, and the soil should not be too early. Otherwise, the roots are likely to be in a relatively deep soil layer, the ground temperature rises slowly, and the root development is also slow, thereby affecting the growth of the shoots.
First, the temperature management in order to promote the slow spring seedlings, planting generally boring 5 to 7 days, the temperature within the shed does not exceed 35 °C does not release the wind, in order to improve the shed temperature, promote seedlings early rooting, early seedlings. If the film is covered with a multilayer film, the insulation film (two curtains) should be uncovered during the day to facilitate light transmission and increase the temperature of the ground. About a week later, the leaves of the seedlings turn green, and the heart leaves begin to grow. The seedlings can be poured with water, and the water gradually begins to spread. It is maintained at 25°C to 28°C during the daytime and above 17°C during the night.
After mid-April, when the temperature of the shed increases to above 25°C, a small amount of bleed should be performed. When the air is released, the shed film is uncovered from the leeward side, and the management of the air outlet is always observed in the windy weather. The wind direction is changed and the air outlet is changed to the leeward surface. The tuyere is gradually closed when the temperature in the booth falls below 20°C. When the temperature is above 15°C in the night shed, the ventilation openings are no longer closed at night and ventilation can be performed day and night. In mid-May, choose to remove the shed film in cloudy evening to avoid wilting. The removed film is folded and placed in a cool place for later use.
Second, water and fertilizer management After planting water, planting water can be cultivated for 2 to 3 days to increase ground temperature, improve soil ventilation, and promote seedling growth. About one week after planting, the seedlings were irrigated and then entered into the cultivator seedlings. After most of the plants were peppered (there were walnuts), the seedlings were completed and the watering fertilizer was started. Afterwards, the soil in the greenhouse is often kept moist. Generally, the water is poured every 7 days or so, and the water is poured into the water for 4 to 5 days. Watering should be carried out in the sunny morning. The amount of watering should not be too large.
The bell pepper is fat and fat. After the fruits are set, the top dressing is started. Each time the water is poured 2 times per acre, the quick-acting nitrogen fertilizer is 15-20 kg per acre, and the application of phosphorus-potassium fertilizer is accompanied by 10 kg of diammonium phosphate and 15 kg of potassium sulfate.
In addition to the normal dressing in the middle and late growth stages, a mixture of 0.1% to 0.2% potassium dihydrogen phosphate and 0.1% urea can be sprayed once a week. Before planting ridges, soil should be cultivated, and the soil should not be too early. Otherwise, the roots are likely to be in a relatively deep soil layer, the ground temperature rises slowly, and the root development is also slow, thereby affecting the growth of the shoots.
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