Why use dehumidifiers in greenhouses

First, the necessity of using dehumidifiers in greenhouses

Greenhouse, light transmission, heat preservation (or heating), used to cultivate plants. In the season not suitable for plant growth, can provide plant growth environment and increase production, mostly used for low temperature season temperature-loving vegetables cultivation or seedling, etc..

The humidity conditions in the greenhouse is directly related to the growth and development of various crops, scientific and reasonable control of the humidity conditions in the greenhouse, can make the greenhouse to form a small environment conducive to the growth and development of fruits and vegetables, is to ensure that the greenhouse high-yield, high-quality, high-efficiency and an important part of the greenhouse.

Different crops at various stages of growth and development of air humidity requirements are different, such as cucumber belongs to the humid vegetables, it requires air humidity in 85% -90% RH or so; squash, bitter melon and other vegetables belong to the semi-moist vegetables, the air humidity required in 70% -80% RH or so; eggplant, beans are semi-dry vegetables, the air humidity required in the 55% -65% RH or so; watermelon, melon and so on. Around; watermelon, melon and other dry type, the required air humidity in 45% -55% RH or so.

For greenhouses, although precipitation will not directly will be to the inside, but the water will flow, the soil will absorb the water, precipitation is constantly, so it will lead to the greenhouse greenhouse air humidity is very high, and the greenhouse is often impermeable, too high air humidity will inhibit the normal transpiration of the plant, slow down the normal water cycle of the soil, induced and exacerbated by the occurrence of diseases and pests and prone to cause the flowers and fruits to fall, which will have a direct impact on the Harvest.

Controlling the relative humidity of the air in the greenhouse has become a problem that greenhouse vegetable growers must solve.

Second, the impact of humidity on greenhouse crops

Humidity on the greenhouse crop transpiration, photosynthesis, disease occurrence and physiological disorders have a significant impact, specifically:　　

1. air humidity affects transpiration. Transpiration in addition to plant water uptake, or mineral nutrient transportation power. Air humidity, transpiration is weak, the ability of plants to transport mineral nutrients is reduced. Transpiration can also regulate the temperature of the leaves, if the temperature is high, air humidity, transpiration is weak, the leaves may be burned.　　

2.the size of the air humidity will affect the opening and closing of plant stomata, air humidity is too large or too small will lead to stomatal closure, carbon dioxide can not enter the leaf cells, photosynthesis will slow down or even stop.　　

3. too much air humidity is conducive to the propagation of disease, most of the fungal spores germination, mycelium development requires high humidity; too low is conducive to the occurrence of pests, such as red spider and other mites generally occur in the high temperature and low humidity environment.　

4.high humidity will make the leaf surface water condensation, resulting in leaf surface cell rupture, while making the plant soft.

Third, the advantages of using dehumidifiers in greenhouses

Ventilation, is currently a greenhouse commonly used one of the simplest method of reducing humidity, generally after each irrigation, without affecting the temperature, we must increase the amount of ventilation, change into the outside world of dry air, reduce the relative humidity of the air in the shed. Ventilation can not be carried out blindly, must be based on the need to determine the amount of air exchange. Therefore, ventilation will be more labor intensive and cannot be precisely controlled, and the temperature may also be affected.

In addition, you can also sprinkle some straw, straw, grass ash or fine dry soil between the rows, but also in the shed at leisure to pile up quicklime and so on to absorb moisture, but the overall or labor-intensive, general results.

Therefore, the greenhouse humidity control is the most simple and effective way to use dehumidifier for dehumidification. The use of greenhouse dehumidifier for humidity control, not only can efficiently remove moisture in the shed, but also the shed air humidity can be accurately controlled in a variety of crops within the scope of the requirements of growth and development. At the same time, the operation of the dehumidifier will not affect the temperature in the greenhouse greenhouse, providing a favorable growth environment for the growth of crops.

Fourth, the application scene

In addition to greenhouse vegetables, greenery and other crops and other fields that generally require humidity control, fruit and vegetable preservation, fungus farming, herbal drying, spice storage, seafood transportation and other humidity requirements of the field, the use of dehumidifiers are the most efficient and convenient humidity control solutions.