Content
The temperature in the greenhouse for cucumbers is an important indicator when growing them. It normalizes the process of bush germination, helps the good absorption of essential microelements and minerals in the required quantities. Temperature can cause diseases in vegetables and affects other processes.
It turns out that every gardener needs to know how important it is to maintain the temperature regime for a certain type of vegetable that they decide to grow in a greenhouse, and they also need to be able to use various techniques to increase or decrease the heat level when required.
How many degrees can cucumbers tolerate?
If you want to grow a crop of cucumbers in a greenhouse, you need to pay close attention to the temperature inside the greenhouse structure.
On the advice of experienced farmers, you need to do the following. When the first shoots form in the pots, they should be kept for several days at a temperature of 25 to 28 degrees. After the first green petals appear, you need to remove the covering film. Move the pots with sprouts to a room with good lighting and set the temperature to 20 to 22 degrees.
If we take into account the evening temperature, then the plants should be grown at a temperature of 17 degrees for the first week. This is necessary to prevent compaction of the structure of the stems and stretching of the seedlings themselves. After a week, increase the degrees to 21-22.
The best option is an increase in several stages.
After all, if the temperature drops sharply, the heat index quickly drops, and the plants growing in the greenhouse may develop serious diseases, the harvest may be lost, or they will completely wither.
When it comes to keeping germinating cucumbers in greenhouses, stick to 24 degrees.
This is the optimal thermal zone for vegetables, and especially for cucumbers.
Heat level for vegetables
So why is it necessary to regulate the temperature in a greenhouse? It's simple: each plant has its own “comfort zone,” which includes:
- optimal temperature;
- a certain moisture content in the air;
- the desired level of soil acidity.
Taking into account such nuances, it is necessary to set the heat level required for cucumbers, paying attention to the difference in degrees between day and night, and taking into account changes in the external environment.
For a better understanding, consider an example: different vegetables grow in open ground. One field brings the gardener large yields and profits, while another field causes many losses. The source of the problem here is the temperature indicator. It is the same for all growing vegetables (both day and night). But what was not taken into account is that one crop requires a temperature of 25 degrees, while the other begins to bear fruit at lower degrees. The result was obvious.
It turns out that temperature adjustment for growing vegetables is individual for each crop. Only by taking this into account will you be able to achieve good results. If the thermal regime constantly changes, there will be no point in using a greenhouse: if the heat decreases quickly, the cucumbers will stop taking in the necessary microelements, and if the temperatures increase sharply, the plants will simply burn and die.
So at what temperature do cucumbers grow? Competent gardeners advise sticking to the norm of 20 to 22 degrees. The same heat regime will be normal for planting a plant in the ground.
This temperature is optimal for the growth of cucumbers in a greenhouse, but know that the lowest heat threshold for this type of vegetable should not fall below 16 degrees.
If you pay attention to the temperature indicators for the soil in the greenhouse, then for cucumbers it must be maintained at 18 degrees. Don't let it fall below 16. Consider the temperature regime:
- planting seedlings (20-220);
- flowering plants (25-280);
- fruiting time (25-300);
- plants will stop growing (150);
- plants will stop growing (100);
- vegetables will die (8-90).
- there will be no formation of ovaries in the following ranges - 17-190, 35-400.
What temperature is detrimental to cucumbers?
A frequent difficulty for beginning farmers is to give the correct answer to the question: at what temperature do cucumbers grow in a greenhouse and not die? Moreover, the majority are interested in a regime that will not destroy the bushes, will not reduce their fruitfulness and will not destroy the inflorescence.
Summer residents with little experience should remember that when planting seedlings in the soil of a greenhouse bed, it is necessary to maintain the heat regime at the same level as when germinating seeds.
If the difference is even 3 degrees, then the plants will not be able to get used to the conditions and will not accept it. And do not forget that at a temperature of 30 degrees, cucumbers will die.
If you cannot install automatic heat control equipment, then you can use simple and effective methods, especially if the issue is a sudden change in temperature.
Ways to increase temperature
If you need to increase the temperature as soon as possible, you can use the following options:
- Set up an auxiliary shelter for a short time using film. This way you will create a layer of air that does not react to environmental influences.
- To reduce heat loss and stabilize the thermal regime, create a “second greenhouse” directly above the vegetables, constructing a frame from wire, wood and other materials. But keep in mind that you need to use perforated film here, which will give the plants the opportunity to ventilate if the weather outside is high (on very hot days it is better to remove it altogether).
- To raise the soil temperature in a greenhouse, you can mulch the soil. The film for mulching should be dark in color (to attract heat).
Adjusting the heat is a very important procedure. But remember that if the indicators significantly exceed the norm, this will have a very bad effect on the fruitfulness of the crop.
Ways to lower the temperature
What can be done if the temperature needs to be lowered:
- Provide free access of oxygen to the greenhouse through the gable. This way you can lower the heat level by 7-12 degrees if necessary.
- Spray the greenhouse with chalk solution by diluting 2 kg of chalk mixture in 10 liters of water with added milk. After spraying the room, the heat level will decrease.
Of course, there are many options for turning up and down the heat. Remember: incorrect temperature conditions in the greenhouse at night or during the day can destroy your plants, and, accordingly, your work. Use all possible methods to preserve it.
