What to do when humidity is high in winter greenhouses? The latest dehumidification methods are here
Now our country's economy is developing better and better, and agricultural planting also has multiple models. And now the most popular is naturally greenhouse planting. Greenhouse planting can achieve off-season cultivation, and many vegetables can also be produced in winter. But when planting vegetables in greenhouses in winter, the growth of vegetables is often affected by excessive humidity in the greenhouse. So what should be done when humidity is high in winter greenhouses? Now let's take a look together with the editor!
1. Reasonable watering
When planting in greenhouses in winter, watering work should be done well, and attention should be paid not to water too much. When the soil moisture content is sufficient, it is best to postpone the watering time. If the soil is too dry, then watering should also be carried out in the morning at the end of cloudy days and the beginning of sunny days. If there are continuous cloudy days, it is best not to water, and do not water in the afternoon. It is easy to cause the ground temperature to decrease, thereby causing humidity to rise. In addition, we should also choose suitable watering methods, mainly drip irrigation, and do not use flood irrigation, otherwise humidity is also very likely to rise.
2. Ventilation management
Although insulation work should be done well in winter, ventilation management should also be strengthened to stabilize the humidity in the greenhouse. Prevent excessive humidity in the greenhouse. When temperature conditions are suitable, ventilation should mainly be early ventilation, or the time for closing ventilation openings should be delayed as much as possible to extend the ventilation time. Reasonable ventilation work can effectively reduce humidity in the greenhouse. Therefore, even on cloudy days, when natural light is insufficient, reasonable ventilation should also be carried out at noon. However, it should be noted that if the temperature at noon on a sunny day is relatively high, low ventilation should not be used, as it is easy to cause the seedlings to be scorched.
3. Mulching with plastic film
When growing vegetables in greenhouses for overwintering, plastic film mulching is an indispensable task. Mulching with plastic film can not only achieve the purpose of insulation, but also reduce the humidity in the greenhouse and ensure that the seedlings can overwinter safely. Then we should also spread an appropriate amount of grain straw and other materials in the working rows. Avoid excessive evaporation from the surface soil, and at the same time the straw can also play a moisture-absorbing role, thereby also reducing the humidity in the greenhouse and avoiding the growth of seedlings being affected by excessive humidity.
4. Increase temperature
Increasing the temperature in the greenhouse is one of the most effective ways to reduce humidity. According to professional timing, for every 1 degree increase in the temperature in the greenhouse, humidity can be reduced by about 3%. In winter, because the natural lighting time is shortened, attention should be paid to frequently cleaning the dust layer on the greenhouse film to improve light intensity. Then every morning and evening, attention should be paid to uncovering and covering the coverings to increase light time. Then methods such as adding reflective curtains can also be used to improve the light intensity and time in the greenhouse, thereby increasing temperature and reducing humidity.
The above is a brief introduction to what to do when humidity is high in winter greenhouses. That is all for today's introduction. This article is for reference only. I hope it can help everyone!