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The greenhouse is a relatively closed environment, making the carbon dioxide concentration in the greenhouse insufficient and changing day and night, affecting the growth and development of the plant. By using modern electronic equipment, the concentration of carbon dioxide can be measured and controlled according to the growth needs of various plants, and the concentration of carbon dioxide in the greenhouse can be controlled in the best condition so that the plants are always in the best growing environment and the best harvest. For the control of carbon dioxide in the greenhouse, it is necessary to use a carbon dioxide meter to measure its content effectively and then take control measures.
Using the CO2 measurement instrument, it can be found that the maximum concentration of carbon dioxide in the greenhouse is 1.2 mL/L in the morning, and as the photosynthesis of plants increases during the day, the concentration of carbon dioxide remains relatively low. After 1600 hours, the photosynthesis of the plant weakened and the carbon dioxide concentration began to rise. At night, carbon dioxide was released under the action of plants and soil, gradually increasing the concentration of carbon dioxide to the highest point of the day. In other crop greenhouses, there is a similar change in carbon dioxide concentration.
After the carbon dioxide content of the greenhouse is measured by the CO2 meter, the photosynthetic rate of the crop usually increases with the increase of the concentration of carbon dioxide under certain light and temperature conditions. When the concentration of carbon dioxide increases to a certain level, the photosynthetic rate of the crop does not increase. Further increase, the carbon dioxide concentration at this time is called the carbon dioxide saturation point of the photosynthetic rate. Conversely, when the concentration of carbon dioxide is reduced to a certain level, the photosynthetic rate of the crop is zero, and the organic matter produced by the photosynthesis of the crop is equal to the substance consumed by its respiration. The concentration of carbon dioxide at this time is called the compensation point for photosynthesis.
Using the CO2 measurement instrument, it can be found that the maximum concentration of carbon dioxide in the greenhouse is 1.2 mL/L in the morning, and as the photosynthesis of plants increases during the day, the concentration of carbon dioxide remains relatively low. After 1600 hours, the photosynthesis of the plant weakened and the carbon dioxide concentration began to rise. At night, carbon dioxide was released under the action of plants and soil, gradually increasing the concentration of carbon dioxide to the highest point of the day. In other crop greenhouses, there is a similar change in carbon dioxide concentration.
After the carbon dioxide content of the greenhouse is measured by the CO2 meter, the photosynthetic rate of the crop usually increases with the increase of the concentration of carbon dioxide under certain light and temperature conditions. When the concentration of carbon dioxide increases to a certain level, the photosynthetic rate of the crop does not increase. Further increase, the carbon dioxide concentration at this time is called the carbon dioxide saturation point of the photosynthetic rate. Conversely, when the concentration of carbon dioxide is reduced to a certain level, the photosynthetic rate of the crop is zero, and the organic matter produced by the photosynthesis of the crop is equal to the substance consumed by its respiration. The concentration of carbon dioxide at this time is called the compensation point for photosynthesis.
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