Many people have special, large or small greenhouses on their personal plots, which are intended for growing seedlings of vegetables, berries, a wide variety of greenery used in cooking, and even flowers.
However, not every owner of such a facility knows how it is important to keep the temperature inside the greenhouse air, the most suitable for rapid plant growth.
In most cases, the so-called thermostatsthat have become one of the most important ingredients required for a good harvest.
What is thermoregulation in the greenhouse?
In greenhouses it is very important to maintain the temperature of the air, as well as the soil layer at a certain level, regardless of what kind of vegetable is grown in them.
By providing 24/7 temperature control taking into account the type of plant grown in this device, you can get a fairly high yield.
Otherwise, with sudden changes in air temperature, freezing, and overheating of the soil layer, it makes no sense to use greenhouses.
After all, lowering the temperature causes the greens to absorb all the necessary nutrients from the soil much worse, and its increase leads to the fact that the plant starts to rapidly grow, or almost completely burns.
By regulating the temperature in the greenhouse and continuous monitoring of various parameters within the tempica, the maximum development of the root system of a particular cultivated vegetable is achieved and their proper growth. In addition, the proper formation of the fruit occurs and the time of their ripening decreases.
For each plant species, it is necessary to maintain a certain temperature of air and soil. In most cases, these figures differ by a couple of degrees.
How to regulate?
To date, there are special devices that are designed to automatically control the temperature inside the greenhouse.
But this equipment is sometimes turns out to be too expensive in order to export it, especially if the greenhouse is not one.
In such cases, you can use cheaper and fairly simple methodsto effectively reduce or increase the temperature. In addition, it is worth noting that some of them are more effective compared to modern technical devices.
In order to quickly raise the air temperature in the building, you must use one of the following methods:
- The shelter of the greenhouse with an additional layer of polyethylene film in order to create an air gap does not react to various environmental factors.
- Inside, a so-called secondary greenhouse is being made - an additional covering is attached to the previously prepared structure, so that it is located directly above the surface of the plants.
- Thorough mulching of the soil layer makes it possible with the help of a black plastic film or black spunbond to attract heat to the plants.
Also have methods that allow, if necessary, lower the temperature inside greenhouses. The most common of these include:
- Greenhouses should not be made too long.
- Through the gables should be free access to air flow from the environment.
- The construction is treated with a special chalk solution.
- Watering grown vegetable crops with a sufficiently large amount of water in the morning.
Variants of the temperature controller in the greenhouse
In our time, produced thermostats of several varieties:
- Electronic.
- Sensory.
- Mechanical.
They differ from each other by the design features and the principle of the mechanism functioning.
Thermostat for greenhouses mechanical is a device whose task is to regulate the operation of climate equipment in order to ensure the support of certain temperature parameters.
It can be used not only for heating, but also for cooling the greenhouse.
Its peculiarity is that a separate device is completely independent. In most cases, the device is manufactured as external wiring equipment mounted directly in the greenhouse itself.
On electronic thermostats The thermistor plays the role of the sensor. The main advantage of devices of this type is called accuracy in maintaining the temperature regime. After all, they are able to respond to even the most minor changes.
Using touch-sensitive thermostats You can set a specific time of the heating system. In addition, at different times it is possible to set a different, most suitable temperature. Such devices, as a rule, are programmed for a sufficiently long period of time - it is possible to set the desired mode for a week, and in some models even longer.
And here is a video about a homemade thermostat for the greenhouse (temperature control by opening the vents).
Operating principle
The main element of the thermostat design, regardless of its type, is a special temperature control unit, which operates according to the readings of the measurements of the sensors connected to it.
A simple thermostat for the greenhouse: the scheme.
The device operates as follows: the heating system receives a signal from the thermostat, which automatically processes the readings measured by several sensors. As a result, the capacity of the system can either decrease or increase.
It tells about the automatic vents for the greenhouse with their own hands.
