How to reduce the humidity of the greenhouse, how to increase the humidity in the greenhouse

After the greenhouse and greenhouse are insulated, the relative humidity of the indoor air is very high, and the relative humidity can often reach 100% before the wind is released in the morning, especially after watering. High relative humidity in the air can hinder anther cracking and pollen germination, and according to research, humidity is more affected than low temperatures. Excessive relative humidity of the air during the flowering and fruiting period induces various diseases, the most prominent of which is gray mold, which is easy to cause a large number of rotten fruits.

Reducing the relative humidity of the air in greenhouses and greenhouses requires two aspects: first, to reduce the evaporation of water in the soil as much as possible. The specific method is to cover the plastic film with high furrows.

Mulching can not only reduce soil moisture evaporation, but also reduce indoor humidity; It can also prevent the occurrence of weeds, which is conducive to increasing ground temperature and promoting fertilizer decomposition. The mulching period should be 10 to 15 days after insulation. After covering with black mulch, immediately break the film, pull out the seedlings, and the hole should not be too large.

After mulching, the ditch should be covered with waste mulch, and straw or wheat straw can also be covered, which will greatly reduce soil moisture evaporation. Method 2, dark irrigation or drip irrigation under the plastic film. In order to alleviate the impact of watering on indoor humidity, dark irrigation under plastic film is used, which can save water and reduce indoor humidity.

Where conditions permit, a drip irrigation system can be configured, and the drip irrigation pipe is laid in the middle of the high furrow, and the film is covered together, and this technology has been promoted in the main strawberry producing areas. The second is to strengthen moisture drainage. Under normal circumstances, the air should be released around noon every day, and the size and time of the air outlet should be flexibly controlled, and the indoor temperature can not be affected by the dehumidification, especially in the cold winter, cloudy and snowy days, even cloudy days, the indoor humidity is large, and the humidity needs to be discharged, but at this time, it is more necessary to keep warm, and the solution is only to release the wind at noon for a short time.

The chimney type is used to ventilate, the dehumidification effect is good, and the cooling is not obvious. In order to improve the moisture removal effect, the location of the air vent is very important, and it should be located at the higher part of the front roof.

Summary. Ventilation Ventilation is a simple and effective way to adjust the humidity environment in a greenhouse. The humidity in the greenhouse is generally higher than that outside, and the air with relatively low humidity introduced through ventilation can dilute the indoor air.

Heating In the case of a certain humidity content of indoor air, increasing the temperature of the greenhouse through heating can naturally reduce the relative indoor air.

Improving irrigation methods The use of water-saving irrigation measures such as drip irrigation and micro-sprinkler irrigation in greenhouses can reduce the water collection on the ground and significantly reduce the ground.

Hygroscopic The use of hygroscopic materials such as lithium oxide to absorb moisture in the air can reduce the moisture content in the air, thereby reducing the relative humidity of the air.

1.Ventilation Ventilation is a simple and effective way to adjust the humidity environment in a greenhouse. The humidity in the greenhouse is generally higher than that outside, and the air with relatively low humidity introduced through ventilation can dilute the indoor air.

2.Heating In the case of the humidity content of the indoor air, increasing the temperature of the greenhouse through heating can naturally reduce the indoor air relativity. 3.

Improving irrigation methods The use of water-saving irrigation measures such as drip irrigation and micro-sprinkler irrigation in greenhouses can reduce the water collection on the ground and significantly reduce the ground. 4.Hygroscopic The use of hygroscopic materials such as lithium oxide to absorb moisture in the air can reduce the moisture content in the air, thereby reducing the relative humidity of the air.

Summary. Hello dear, it's a pleasure to serve you! If the humidity in the greenhouse is too large, it should be reduced in this way, and the spraying of dripping agent can reduce the amount of water accumulation on the surface of the film or cover the mulch film The mulch film is not breathable, and can reduce the number of ground water evaporation and irrigation, so as to achieve the purpose of reducing the air humidity in the shed.

How to reduce humidity when the humidity of the greenhouse is high.

Hello dear, it's a pleasure to serve you! If the humidity in the greenhouse is too large, it should be reduced in this way, and the spraying of dripping agent can reduce the amount of water accumulation on the surface of the film or cover the mulch film The mulch film is not breathable, and it can reduce the number of ground water evaporation and irrigation deficits, so as to achieve the purpose of reducing the humidity of the air in the shed. Thank you for your patience, the above is all my reply, I hope you can help.

You can choose the non-drip film when you choose the greenhouse film, this film has good light transmittance, will not drip water everywhere, and can greatly reduce the humidity in the shed.

Our greenhouse is a cement floor, and the main purpose is to make cement products dry quickly.

Now the humidity inside is too much, how can the humidity come down.

Ventilation and dehumidification methods can be chosen. During the day, the best time for ventilation and dehumidification is noon, because the humidity difference between the inside and outside of the shed during this time is large, and the moisture is easier to discharge. In other periods, it is also necessary to make clever drafts on the premise of ensuring temperature requirements, and extend the ventilation time as much as possible.

In addition, special filial piety should be paid attention to 2-3 days after watering the greenhouse, 1-2 days after foliar fertilizer (medicine), rainy (snow) days and sunset before and after strengthening ventilation and moisture drainage.

Sprinkle some straw, wheat straw, grass ash or fine dry soil, and you can also pile up hygroscopic materials such as quicklime in the free space in the shed to absorb moisture.

1. Heating and humidity reduction: This method can not only meet the needs of vegetables for temperature, but also reduce the relative humidity of the air. When the plant grows to be resistant, the watering and closing the shed temperature rises for about 30 hours for one hour, and then the ventilation and moisture removal hours can be repeated when the shed moisture is lower than 25.

2. Regular ventilation: The humidity in the greenhouse is mainly caused by its sealing, so proper ventilation is a good way to reduce humidity. However, ventilation is not always possible, and it must be done when the outdoor temperature is relatively high, otherwise the indoor temperature will drop.

If the temperature drops too quickly during ventilation, close the vent in time to prevent the sudden drop in temperature from harming the crop.

The air humidity in the greenhouse has a great influence on the transpiration of the plants in the greenhouse, if the air humidity is relatively large, the transpiration is weakened, then it directly leads to the decline of the plant's ability to absorb water and transport nutrients; If the temperature in the greenhouse is high and the transpiration is weak, the plant leaves will not be able to carry out normal heat dissipation treatment, which is likely to cause plant leaf burns. If the air humidity is too low for a long time, the leaf will be due to the difference between the internal water pressure and the external water vapor pressure, resulting in insufficient moisture inside the leaf and necrosis of the edge and leaf tip.

Temperature and humidity are very important for greenhouse planting, and we will briefly introduce the methods of reducing air humidity and increasing air humidity.

1. Methods to reduce air humidity.

1.Enhancing air circulation in the greenhouse and circulating dry air and moist air through air circulation is a more commonly used method to reduce air humidity.

2.Increasing the temperature of the greenhouse can speed up the evaporation of water, thus reducing the humidity of the air.

3.Increasing the amount of light also causes the moisture in the air to evaporate.

4.Changing the amount of sprinkler irrigation and spray is also an effective way to reduce air humidity.

5.If necessary, use a dehumidifier to dehumidify the room.

6.Place desiccant in the corner to dehumidify.

2. Ways to increase air humidity.

1.Wet curtain method, wet curtain can not only reduce the temperature in the greenhouse, but also has a great effect on the humidity.

2.Sprinkler irrigation, which uses sprinkler irrigation to increase the humidity of soil or air, is a commonly used humidification method.

3.Maintain a certain degree of enclosure, so that the indoor air circulation is not too fast, and the humidity in the greenhouse can be maintained.

4.Using a humidifier is also a good option.

The control of temperature and humidity in greenhouses is a thorny problem for the majority of greenhouse owners, and the temperature and humidity monitoring system of Jiuchunjian greenhouse can help users monitor the air humidity in the greenhouse in real time and find an environment for plant growth.

Jiuchunjian greenhouse monitoring system can collect environmental parameters such as temperature, humidity, light, soil temperature, soil moisture, CO2 concentration, and temperature for 24 hours in the greenhouse.

Ventilation and dehumidification method.

Generally speaking, when we encounter high humidity in the greenhouse, the first thing we think of is ventilation control, which is also the most basic dehumidification method. However, ventilation needs to be carried out when the temperature is relatively high to avoid causing the temperature in the shed to drop. The best time for ventilation and dehumidification is noon, because the humidity difference between the inside and outside of the greenhouse during this time period is large, and the moisture will be easily discharged.

If you choose a different time period, you must ensure that the temperature is high and that the ventilation time is as long as possible. If the temperature drops too quickly during ventilation, then it is necessary to stop ventilation in time to avoid freezing damage to crops caused by a rapid drop in temperature.

Heating and dehumidification method.

This method reduces the humidity in the greenhouse without the temperature in the shed dropping. When the vegetables have a certain resistance, they can be watered, the temperature can be closed to about 30, and the temperature can be kept for about 1 hour, and then ventilated and drained the moisture. After 3-4 hours, the shed temperature can be repeated when it reaches 25.

Watering wisely. Generally speaking, the main reason for the humidity in the greenhouse is due to watering. Therefore, we must pay attention to the amount of watering vegetables in winter greenhouses, and also pay attention to the best time and way of watering.

Usually in winter and spring, you can choose to water in the ditch on a sunny day or in the branches, and the mulch film can be covered by the dark irrigation under the film. Watering should be strictly controlled to avoid excessive indoor humidity. Each watering can be properly ventilated, and the soil can be loosened in time to reduce soil and air humidity.

mulching. This is mainly to reduce the evaporation of soil moisture through plastic film mulching, and can also reduce the number of irrigation, which is the main measure to reduce indoor air humidity.

Hygroscopic. It is mainly natural and artificial. Artificial moisture absorption can be used with good moisture absorption insulation curtain materials and good moisture absorption insulation curtain materials, such as non-woven fabrics can prevent condensation on the surface of the shed, and at the same time tender and consolidate to avoid dew falling on the plants, thereby reducing air humidity.

In the case of natural moisture absorption, it is mainly spread between the rows of straw, wheat straw, quicklime and other materials to adsorb water vapor or fog to achieve the purpose of moisture reduction.

Cultivating and dispersing moisture. It is mainly to carry out shallow hoeing on the surface when the greenhouse temperature is high on a sunny day to accelerate the evaporation of surface water and reduce the humidity in the greenhouse.

The air humidity required for centipede growth is 55% to 75%, and the humidity sensor can be used to adjust the farm. Generally, the simple way for farmers to adjust the humidity is: if the humidity is small (less than 50%), one is to sprinkle water into the breeding soil to increase the humidity of the breeding soil, and the other is to sprinkle water on the walls and floors in the greenhouse to increase humidity.

If it is a rainy day and the air humidity is too high (more than 90%), the honeycomb coal stove can be directly burned in the greenhouse for moisture discharge.

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1. The relative temperature is high and the humidity is high. Ventilation is adopted to control and reduce water application. Pay attention to indoor temperature changes and ensure a safe indoor temperature.

2. The relative temperature is low and the humidity is large. At the same time of ventilation and humidity, the indoor (a fire room is set up next to the greenhouse to allow heat flow into the greenhouse) artificial fire heating or electric heating heating.

3. Note. The humidity and temperature in the greenhouse in winter should be reasonably controlled!