The microclimate within the shed includes: temperature, humidity, gas, and light. Its specific control measures are:
First, the temperature
1. In general, the temperature in the shed is high in the east and high in the west in the afternoon. Therefore, in the ventilation, it is necessary to smash the middle first, then the east side, and finally the west side; when closing, first close the east side, then close the west side, and finally close the middle.
2, should pay attention to the weather changes and wind direction, when the wind must first open down the limelight, after the limelight, and to open the top of the limelight, under the limelight, the amount of ventilation, according to the specific needs of the indoor shed , and make adjustments at any time.
3. In case of cold weather, it is necessary to delay the ventilation time properly, and the closing time should be appropriately advanced. Within a day, at least 8 hours or more is required to maintain the temperature of the greenhouse at about 20°C. In case of strong low temperatures, it is necessary to take warming and moisturizing measures at night and cool the seedlings the next morning. When the outside temperature rises to 15°C, it can be ventilated overnight. The greenhouses on both sides of the midsummer should be fully opened so that the greenhouses will be shaded.
2. Humidity: Due to the tight airtightness of the greenhouse film and the large temperature difference between the indoor and outdoor sheds, water droplets are formed in the shed film, affecting the light and affecting the growth of the crops, so that the humidity in the shed is increased. Therefore, the humidity management in the shed room should be based on the dehumidification. Lord, take measures such as ventilation and other dehumidification to control the humidity, so that the humidity in the greenhouse is kept between 60-80%. After rainy weather and watering, increase ventilation and reduce humidity.
3. Gas: Indoor space in the shed is limited. Due to such reasons as fertilizing and fighting drugs, harmful gases in the shed are accumulated, and the carbon dioxide content is reduced, which affects the growth and development of greenhouse vegetables. Therefore, before the big ventilation every day, we must first open a small gap in the greenhouse greenhouse, release the turbid air and toxic gases, exchange fresh air. At the same time, carbon dioxide content should be determined frequently. When the carbon dioxide content in the shed is insufficient, it must be replenished promptly.
Fourth, light: Lighting is the driving force behind the growth of greenhouse vegetables. Therefore, it is necessary to wipe the shed film frequently to increase the lighting in the shed. When the light intensity, light quality and illumination time in the shed are insufficient, an incandescent lamp can be used to artificially supplement the illumination to make up for the lack of illumination.
First, the temperature
1. In general, the temperature in the shed is high in the east and high in the west in the afternoon. Therefore, in the ventilation, it is necessary to smash the middle first, then the east side, and finally the west side; when closing, first close the east side, then close the west side, and finally close the middle.
2, should pay attention to the weather changes and wind direction, when the wind must first open down the limelight, after the limelight, and to open the top of the limelight, under the limelight, the amount of ventilation, according to the specific needs of the indoor shed , and make adjustments at any time.
3. In case of cold weather, it is necessary to delay the ventilation time properly, and the closing time should be appropriately advanced. Within a day, at least 8 hours or more is required to maintain the temperature of the greenhouse at about 20°C. In case of strong low temperatures, it is necessary to take warming and moisturizing measures at night and cool the seedlings the next morning. When the outside temperature rises to 15°C, it can be ventilated overnight. The greenhouses on both sides of the midsummer should be fully opened so that the greenhouses will be shaded.
2. Humidity: Due to the tight airtightness of the greenhouse film and the large temperature difference between the indoor and outdoor sheds, water droplets are formed in the shed film, affecting the light and affecting the growth of the crops, so that the humidity in the shed is increased. Therefore, the humidity management in the shed room should be based on the dehumidification. Lord, take measures such as ventilation and other dehumidification to control the humidity, so that the humidity in the greenhouse is kept between 60-80%. After rainy weather and watering, increase ventilation and reduce humidity.
3. Gas: Indoor space in the shed is limited. Due to such reasons as fertilizing and fighting drugs, harmful gases in the shed are accumulated, and the carbon dioxide content is reduced, which affects the growth and development of greenhouse vegetables. Therefore, before the big ventilation every day, we must first open a small gap in the greenhouse greenhouse, release the turbid air and toxic gases, exchange fresh air. At the same time, carbon dioxide content should be determined frequently. When the carbon dioxide content in the shed is insufficient, it must be replenished promptly.
Fourth, light: Lighting is the driving force behind the growth of greenhouse vegetables. Therefore, it is necessary to wipe the shed film frequently to increase the lighting in the shed. When the light intensity, light quality and illumination time in the shed are insufficient, an incandescent lamp can be used to artificially supplement the illumination to make up for the lack of illumination.
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