Weather change management is a key to dehumidification in a shed!

In recent days, the outside temperature has been reduced, the ventilation in the greenhouse has decreased, the humidity in the greenhouse has risen, and the incidence of diseases has increased. In particular, high incidence of bacterial diseases has occurred. Here, farmers should be reminded that friends should adjust agricultural operations in the light of changes in the weather. The main humidity is inside. Specifically, it can be done from the following four aspects:

The first is reasonable ventilation and humidity. Ventilation is the main means of regulating the temperature and humidity in the shed. When the temperature is high in summer and autumn, the ventilation is large, but the current season temperature is gradually reduced, and the ventilation is reduced. To reduce the humidity, it is recommended that the vegetable farmer be ventilated in stages. When the temperature is low, the air outlet is pulled out and the air outlet is gradually drawn as the temperature increases. If the greenhouse insulation performance is good, vegetable farmers can also be properly ventilated at night to ensure that the environment within the shed.

The second is the combination of plastic film and straw to reduce water evaporation. In other words, planting lines are laid on the mulch to reduce the evaporation of soil moisture, especially after watering. The effect is even more obvious. At the same time, the stalks are used in conjunction with the operation to adjust the effect. When the humidity is high at night, the straw can absorb some moisture and the humidity is low during the day. Straw can release its own stored water, play a role in regulating the humidity of the air, straw can also avoid hard tread surface when manually operated.

The third is to improve irrigation methods. The traditional flood irrigation method is not only wasting water, but also easily rooting, causing the humidity in the shed to increase, causing diseases. New irrigation technologies such as drip irrigation and sprinkler irrigation can allow water to gradually infiltrate into the soil and improve water use efficiency. The advantage of humidity control in the shed during the low temperature season is obvious. At the same time, on the day of watering and on the following day, increase the ventilation rate as the temperature increases, and remove moisture as soon as possible.

The fourth is to change the way of medication. At present, vegetable farmers still use spray as the main ingredient, which will inevitably increase the humidity in the greenhouse. It is recommended that when the farmers spray the pesticide in sunny weather, it is best to start around 3:00 pm, spraying as much as possible before dark, to ensure that the liquid is absorbed completely, and then In even cloudy days, farmers can choose to use automatic sprayer, mister, reduce the amount of medication. In addition, the medicine used in the roots is preferably rooted to ensure the efficacy while reducing soil moisture.

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