What is the role of insulation in vegetable greenhouses at night?

Greenhouse vegetable greenhouse thermal insulation quilt is a widely used thermal insulation equipment in my country's current greenhouse thermal insulation. The existence of the greenhouse is to artificially change the natural climatic conditions to obtain the results of planting or breeding, so it naturally needs heat preservation and insulation. Some have higher requirements on temperature and humidity, and rely on the function of the greenhouse itself to achieve the need to add other auxiliary equipment and facilities. There are many equipments that can be selected in the heat preservation and insulation of greenhouses, such as air conditioners, fans, hot blast stoves, warming blocks, geothermal pipes, etc., but they have various differences in energy consumption, smooth temperature change, effect continuity, use cost, etc. There are many drawbacks in this aspect, and they are not universally available. Insulation is the bottleneck link in the agricultural operation of greenhouse facilities. No matter how high the standard of greenhouse skeleton film is, no matter how large the investment scale is, it can only have a positive significance in the stability and service life of the greenhouse, and it does not play a decisive role in changing the climatic conditions. Therefore, How to effectively heat insulation is the bottleneck link of whether the investment in greenhouses can be effectively profitable. 1. What are the thermal insulation methods for using vegetable greenhouse thermal insulation quilts? (1) The shed is equipped with heating facilities. In order to prevent the temperature in the shed from dropping sharply due to extreme weather such as continuous overcast, rain and snow, the shed can be equipped with heating facilities such as stoves or charcoal basins. The thermal insulation quilt needs to ensure that the generated flue gas can be discharged smoothly, otherwise it will have a toxic effect on the vegetables. (2) Set up a water storage tank and a cold-proof ditch. In the early stage of production, a storage tank can be dug in the greenhouse at corresponding distances, and the bottom of the pool is covered with plastic film. Before the cold weather arrives, fill the pool with clean water, and then cover the upper part of the pool with a transparent film. (3) High-ridge cultivation is implemented in vegetable greenhouses for thermal insulation, with appropriate watering in a timely manner. Using high-ridge cultivation in winter can increase the heat-absorbing area of ​​the ground, which is conducive to raising and lowering the ground temperature and ensuring the healthy growth of vegetables. Timely and appropriate watering can effectively coordinate the relationship between water, air and heat in the soil. 2. What is the role of the insulation quilt in vegetable greenhouses at night? (1) The thermal insulation is required to be rolled up after sunrise and put down before sunset, so the corresponding thermal insulation system is also a movable quilt system, so the thermal insulation quilt material is required to be a flexible material. (2) After the thermal insulation is installed, it will always work in the outdoor open air. For this reason, it is required to be windproof, waterproof, and anti-aging to adapt to the daily wind, rain, snow, hail and other natural climatic conditions. (3) The thermal insulation quilt is laid in front of the greenhouse and is mainly used for thermal insulation of the greenhouse at night, so having good thermal insulation performance is the main requirement for the greenhouse thermal insulation quilt. There are many greenhouse practitioners who have high requirements for steel pipe film construction when building greenhouses, and there is no lower limit for the selection of insulation before winter, as long as the price is low and can be used. The price is directly proportional to the quality and the effect. The result can only be that the greenhouse with a large investment cannot achieve the expected profit or even a loss due to the poor performance of the thermal insulation quilt. Therefore, it is very important to understand the vegetable greenhouse insulation quilt and choose the correct insulation quilt. The vegetable greenhouse insulation quilt must be familiar to everyone, and we farmers are more familiar with it. It is late autumn, and we are all so cold. Presumably those vegetables are colder, not to mention that they are wearing thin green clothes. , it is colder, we should cover them with a thick thermal insulation quilt at this time. The living environment of vegetable greenhouse insulation is generally more difficult. It is still very good when it is sunny, and it is worse when it is windy and rainy. Now that winter is about to enter, the weather is colder, and the insulation quilt is used more at night. Greenhouse vegetable greenhouse insulation is widely used, and most greenhouses can be used. It has good insulation effect, heat insulation effect, and long service life. Overall, the cost performance is very high. But now the thermal insulation quilt industry is relatively chaotic, the thermal insulation quilt is still a low-end product as a whole, lacks industry norms, lacks quality standards, and there is no industry unified standard for thermal insulation performance, waterproof performance, thermal insulation performance, tensile resistance, etc. Neither do corporate standards. This also leads to the lack of measurement standards for users to buy products of poor quality by mistake, resulting in very serious consequences.