The growth of crops relies on photosynthesis, which is the process by which crops use light energy to synthesize sugar from water and carbon dioxide and release oxygen. At present, the concentration of carbon dioxide in the atmosphere is about 420ppm (0.042%), and the concentration of carbon dioxide in the canopy is significantly lower than 420ppm. When plants carry out photosynthesis, the required concentration of carbon dioxide is 800-1500ppm. In closed greenhouses, the concentration of carbon dioxide can even be lower than 100ppm, indicating that crops are in a state of extreme hunger, which will seriously affect their growth.

Improving yield: Increasing the concentration of carbon dioxide in the greenhouse to over 1200ppm can accelerate the photosynthesis process of plants, thereby promoting the growth rate and yield of crops. Theoretically, leaf photosynthetic efficiency can be increased by more than 60%. The average yield increase reached 33.6%, with tomato and fruit crops increasing by 40-68% and leafy vegetables increasing by 30-104%.
Improving the quality of fruits and vegetables: Increasing the application of carbon dioxide can increase the accumulation of nutrients in plants, significantly improving the quality of fruits and vegetables. For example, increasing the content of vitamin C, soluble sugars, soluble proteins, pectin, while reducing the content of nitrate, nitrite, heavy metals, etc. in fruits and vegetables.
Reduce pests and diseases, lower pesticide usage: Increasing the application of carbon dioxide can inhibit the activity of certain insects and pathogens, reduce the risk of pest and disease occurrence, and thus reduce pesticide usage.

Carbon dioxide concentration control system: Composed of gas tank, vaporizer, pressure reducing valve, solenoid valve, and valve controller. It can mix high concentrations of carbon dioxide into the required concentration for crops and transport it through pipelines to greenhouses. This intelligent control system can accurately control the carbon dioxide concentration required for crop growth.
IoT intelligent sensing system: Real time monitoring of air temperature and humidity, soil temperature and humidity, leaf chlorophyll content, soil nutrients and other indicators inside the greenhouse through various sensors. This system enables remote real-time data transmission of meteorological sensor data through wireless networks, and can also adjust the climate conditions inside the greenhouse in advance based on weather forecast information to reduce the impact of adverse weather conditions.
Intelligent algorithm automatic control: The data collected by various sensors in the greenhouse is transmitted back to the cloud platform in real time through the Internet of Things system and edge computing gateway, and the climate environment in the greenhouse is automatically, intelligently and accurately adjusted according to the growth conditions of different crops based on the cloud platform algorithm, so as to achieve energy conservation and consumption reduction, reduce labor costs, and improve economic benefits.

Ethylene: It is an important plant hormone. Can be used for post harvest processing, such as ripening bananas, tomatoes, mangoes and other fruits. It can also induce flowering, increase flowering rate and fruit setting rate, thereby increasing yield.
Nitrogen: It is an important raw material for synthesizing nitrogen fertilizers. By applying nitrogen fertilizers, it can effectively promote plant growth and increase crop yields. In terms of preserving and storing agricultural products, filling nitrogen can reduce oxygen content, delay the ripening and aging of fruits, grains, etc., and prevent oxidation and spoilage.
The application of gas technology in agriculture covers all aspects from planting, growth, production, transportation, and storage. By accurately regulating the gas environment, agricultural production efficiency, crop quality, and resource utilization can be significantly improved, promoting the development of agriculture towards green, intelligent, and sustainable directions.