Many people think that the thicker the plastic film, the better the insulation. In fact, this understanding is wrong. Let us first understand the thermal insulation principle of plastic film: plastic film divides the space into a separate enclosed space and saves heat to avoid heat exchange inside and outside the boundary. Where does the heat in the silver and black mulch come from? Next, Qingzhou Luhong Plastic Co., Ltd. will share this knowledge with you.

Its heat mainly comes from the infrared radiation generated by the sun shining on the wall and the reverse radiation of the earth. If the plastic film we choose is too thick, the ability of sunlight to pass through the plastic film will be greatly reduced (we call the transparency of the plastic film), which will lead to a temperature difference in the enclosed space. Therefore, it is not that the thicker the plastic film, the better the insulation.

The insulation of the greenhouse relies on silver and black two-color mulch, and the temperature difference between inside and outside the greenhouse is only about 3-6 degrees. But in the cold north, this temperature is difficult to reach the growing conditions of crops, so how can we maintain the temperature in the shed? What are the main points of heat preservation in general greenhouses?

1. The height of the shed should be selected reasonably when constructing the greenhouse to increase the light intensity.

2. Seasonal selection of greenhouse mulch, such as in the cold winter in the north, we generally use PVC weather-resistant and dust-proof film. This kind of film is weather-resistant, and has strong light transmission and thermal insulation properties, so it has been used in winter.

3. Build a "shed in a shed". What is called a "shed in a shed" is to build a small shed in the greenhouse. This method is suitable for sudden temperature drops and severe cold areas, and its insulation performance can be imagined.

4. The greenhouse is covered with straw curtains or greenhouse insulation quilts, and greenhouse insulation quilts are generally used. Because straw curtains are easy to scratch the greenhouse film, and there is relevant knowledge, the greenhouse heat preservation effect is better than that of straw curtains.

5. Install heaters in the shed. The biomass pellet hot blast stove is currently popular, which is economical and energy-saving, and pay attention to fire prevention.

The above information is the information about the silver and black mulch film summarized by our company for everyone. I hope it can help you. If you have any questions in this regard, you can call our company for consultation!