Can agricultural greenhouses be heated with air?

With the implementation of low-carbon emission reduction policies, air-source heat pumps have gradually become the mainstream choice to replace high-pollution equipment and are widely used in various industries to solve heating problems. So, can air energy be used in agricultural greenhouses that are related to people's livelihoods?
In northern winter, for vegetable greenhouses, the temperature inside the greenhouse is often lower than the suitable temperature required for plant growth. When temperatures are too low, plant growth slows down, affecting yields. Therefore, heating measures are needed to increase the temperature in the vegetable greenhouse to ensure the normal growth of plants.
However, traditional heating equipment requires coal-fired hot blast stoves, which not only consume high energy, but also pollute a lot, and require continuous monitoring by dedicated personnel. What's more serious is that the temperature is difficult to maintain stable for a long time, and large temperature fluctuations may cause serious losses. Even if other electric heating equipment is used, there are still problems of high energy consumption and safety hazards.
In this case, air source heat pumps show their unique advantages. It uses free heat energy in the air to transfer heat to the heat dissipation end through water, thereby providing a stable warm environment for the vegetable greenhouse. It can ensure that vegetables grow in the best environment, save energy costs for growers, and increase economic benefits. Compared with traditional heating methods, air source heat pumps have significant advantages in energy saving, environmental protection, and reduced operating and maintenance costs.