The temperature in the greenhouse for cucumbers is an important indicator for their cultivation. It normalizes the process of sprouting a bush, helps the good absorption of essential trace elements and minerals in the required amount. Temperature can cause disease in vegetables and affects other processes.
It turns out that each gardener needs to know how important it is to maintain the temperature regime for a certain kind of vegetables that they decided to grow in a greenhouse, and also to be able to apply various techniques to raise or reduce the level of heat when it is required.
How many degrees can cucumbers tolerate
If you started to grow a crop of cucumbers in the greenhouse, you need to pay close attention to the temperature inside the greenhouse structure.
According to the advice of experienced farmers, do the following. When the first sprouts are formed in the pots, they should be kept for several days at a temperature of 25 to 28 degrees. After the appearance of the first green petals need to remove the covered film. Move the pots with sprouts to a room with good lighting and set the temperature range from 20 to 22 degrees.
If we take into account the evening temperature, then the plants need to be grown the first week at a temperature of 17 degrees. This is necessary to prevent compaction of the structure of the stems and drawing of the seedlings themselves. At the end of the week, increase degrees to 21-22.
Important! Try not to allow a sharp thermal differential: no matter day or night, increase degrees smoothly.The best option is to raise in several stages.
After all, if the temperature drops sharply, the rate of heat drops rapidly, and the plants growing in the greenhouse may have serious illnesses, the harvest will disappear, or they will fade altogether.
When the question concerns the aging of sprouting cucumbers in greenhouse conditions, stick to the figures at 24 degrees.
This is the optimal thermal zone for vegetables, and especially for cucumbers.
The level of heat regime for vegetables
So why is it necessary to adjust the temperature in the greenhouse? It's simple: every plant has its own "comfort zone", which provides for:
- optimum temperature;
- specific moisture content in the air;
- the desired level of soil acidity.
Given these nuances, you need to set the required level of heat for cucumbers, paying attention to the difference in degrees during the day and at night, and take into account changes in the external environment.
For more understanding, consider an example: in the open field grow different vegetables. One field brings great harvests and profits to the grower, another field brings many losses. The source of the problem here is the temperature indicator. It is the same for all growing vegetables (day and night). But it was not taken into account that one culture requires a temperature of 25 degrees, and another begins to bear fruit at lower degrees. The result was obvious.
It turns out that the adjustment of the temperature index for growing vegetables is individual for each crop. Only considering this, you can achieve good results. If the thermal regime is constantly changing, there will be no sense from the greenhouse: with a rapid decrease in heat, cucumbers will stop taking the necessary trace elements, and if the degrees increase dramatically, then the plants will simply burn and die.
So at what temperature do cucumbers grow? Competent gardeners advise to adhere to the norm from 20 to 22 degrees. The same mode of heat will be normal for planting plants in the ground.
This temperature is optimal for the growth of cucumbers in the greenhouse, but be aware that the lowest heat threshold for this kind of vegetables should not fall below 16 degrees.
If you pay attention to the temperature indicators for the soil in the greenhouse, then for cucumbers it should be maintained at 18 degrees. Do not let it fall below 16. Consider the temperature mode:
- planting seedlings (20-220);
- flowering plants (25-280);
- fertility time (25-300);
- plants will stop growing (150);
- the 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 novice farmers is to give the correct answer to the question: at what temperature do cucumbers grow in the greenhouse and do not die? And the majority is interested in the regime that does not destroy the bushes, does not reduce their fruitfulness and does not destroy the inflorescence.
Summer residents with little experience should remember that when planting seedlings in the ground of a greenhouse bed, it is necessary to keep the heat regime at the same level as in germinating seeds.
If the difference is even 3 degrees, the plants will not be able to get used to the conditions and will not be accepted. And do not forget that at a temperature of 30 degrees cucumbers will die.
If you can’t install automatic heat control equipment, you can use simple and effective methods, especially if the question is about a sudden change in temperature.
Ways to raise the temperature
If you need to increase the temperature as soon as possible, you can apply the following options:
- Arrange an auxiliary shelter for a short time with a film. So you make 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, making a frame from wire, wood, and other materials. But note that you need to apply a perforated film here, which will give the plants the opportunity to air out if the weather is high outside (on very hot days it is better to clean it altogether).
- To raise the temperature of the soil in the greenhouse can make mulching land. The mulch film must be dark in color (to attract heat).
Heat control is a very important procedure. But remember that if the indicators will significantly exceed the norm, it will have a very bad impact on the fruitfulness of the crop.
Ways to lower the temperature
What can be done if the temperature should be lowered:
- Provide free access of oxygen to the greenhouse through the gable. So if you need to lower the level of heat by 7-12 degrees.
- Spray the greenhouse with the chalk solution, diluting 2 kg of the chalk mixture in 10 liters of water with the addition of milk. After spraying the room, the heat level will drop.
Of course, there are many options for raising and lowering heat. Remember: the wrong temperature conditions in the greenhouse at night or daytime can destroy your plants, and accordingly, your labors. Use all possible methods to save it.
