Horticultural technology is a professional basic theory of biological science and horticultural science. It is widely used in agriculture, forestry, garden management, business and other fields and departments to engage in technology, design and promotion of modern technology with long-term development prospects related to horticultural science . As an agricultural subject, horticulture has received more and more attention and attention in modern society. With the enhancement of people's awareness of ecological environment protection and the increasingly prominent food safety issues, the horticulture industry will face greater market demand in the future.
Controlled environment horticulture is a technology-based approach to food production that utilizes modern systems to protect, maintain and optimize growing conditions for crops. Production is carried out in closed growing structures such as greenhouses or buildings, through the use of advanced computer- controlled sensors combined with advanced software models to control not only temperature , light levels and humidity, but also nutrient levels, humidity, pH in the atmosphere value and carbon dioxide.
Fruits and vegetables grown in an environment with plenty of carbon dioxide are of higher quality than those grown in an environment that lacks carbon dioxide. Therefore, when we carry out horticultural planting and agricultural production, we need to monitor the carbon dioxide content in the greenhouse. The crops cultivated in the greenhouse are placed in a relatively closed place for a long time, and the carbon dioxide concentration in the greenhouse changes greatly within a day. It reaches a maximum value of 1000-1200ppm before sunrise , and drops to about 100ppm 2.5-3 hours after sunrise , which is only 30% of the atmospheric concentration . % , and continued to rise until 2 hours later in the afternoon before returning to atmospheric levels around 4 pm.
In large-scale horticultural greenhouses, when the carbon dioxide in the air is depleted, it is necessary to enrich the carbon dioxide by controlling the environment, because the lack of carbon dioxide will slow down the photosynthesis process and reduce productivity. Therefore, modern controlled-environment gardening systems often have CO2 sensors to control excess CO2 emissions into the environment. Accurate and reliable CO2 monitoring is an important part of climate control in horticulture. The Swiss Neroxis thermal conductivity gas sensor - MTCS2200 series represented by Gongcai.com : It is made on a silicon wafer by thin film deposition and silicon micromachining technology. The device can determine the gas concentration of trinary or ternary gas mixtures. It can be used to detect CO2 gas concentration in environments such as safe industrial process control, gardening, food storage, and fermentation process control .