The weather is getting cold, how to do anti-freezing measures for greenhouse vegetables?

With the arrival of winter, some farmers who grow vegetables in greenhouses are most worried about freezing injury, and they will take anti-freezing measures in advance every year, because the investment in greenhouses is not small, and once vegetables are frozen, they are likely to lose money.

I believe that regular growers have experience in preventing vegetables from freezing in greenhouse. However, for some inexperienced farmers, the little helper will tell you a few points below, hoping to help.

1, cover the grass curtain

This method has been used for many years and is economical, convenient and practical. When cold weather comes, especially at night, cover the greenhouse with a layer of grass curtain in advance, and open the grass curtain after the temperature is restored without affecting the light. This is the most commonly used anti-freezing measure at present.

There are many new thermal insulation materials on the market now, which are also covered by greenhouses. Interested friends can learn about it, but the cost will be more expensive.

2. Heating in the shed

There are many ways to increase the temperature in the shed. For example, when it is below 0 degrees in the evening, some friends will use coal stoves to raise the temperature, but they should install exhaust pipes and pay attention to ventilation. In addition, some friends will buy a hot fan to increase the temperature. These are temporary measures to raise the temperature, and interested friends can try them.

water

Watering also has a certain warming effect, but it should be noted that flooding is not allowed, and only a small amount of water can be used, because after watering, the temperature in the soil and the outside temperature are blocked by water, and when the temperature suddenly drops, the temperature in the soil will not drop immediately, which can play a buffering role. But if there is no drought in the shed, this method is unnecessary.

Step 4 spray foliar fertilizer

When the temperature drops, spraying some foliar fertilizer can improve some frost resistance of vegetables, especially for those vegetables with weak growth, not only from the outside, but also from the vegetables themselves.

In addition to the above four points, if there is snowfall, the following two management measures are also important.

1, clear snow in time

In case of snowfall, attention should be paid to clearing the snow above the greenhouse to prevent the greenhouse from collapsing. You can also see many such situations when you watch the news. Once the greenhouse collapses, the consequences can be imagined. Therefore, when the snow stops, it can be cleaned up. If the snow is heavy and lasts for a long time, it needs to be cleared against the snow.

2. Pay attention to the ventilation in the shed

After the snowfall, in order to keep the temperature in the shed, some growers will seal the shed tightly. In fact, this method is not desirable, because the growth of vegetables needs enough air circulation, so you can leave an air outlet, or you can open the curtains of the greenhouse irregularly and ventilate for a while before closing them. In this case, it is beneficial to the growth of vegetables.

The above contents are the contents of anti-freezing measures for greenhouse vegetables. When the low temperature is coming, I hope everyone can do a good job of anti-freezing, ensure the normal growth of vegetables in greenhouses, produce good results with good quality and quantity, and sell them at a good price.

In this regard, the little helper said so much first. If you have other better experiences in the planting process, please share them with you in the comments below.