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一、日光温室的二氧化碳环境蔬菜正常生长要求空气中有较高浓度的二氧化碳，据试验，大多数蔬菜的二氧化碳饱和点为１０００毫克～１６００毫克／升，二氧化碳补偿点为８０毫克～１００毫克／升。在补偿浓度与饱和浓度之间，二氧化碳浓度越高，光合作用越旺盛，增产效果越明显
First, the greenhouse carbon dioxide environment The normal growth of vegetables requires a higher concentration of carbon dioxide in the air, according to the test, most vegetables have a carbon dioxide saturation point of 1000 mg ~ 1600 mg / l, carbon dioxide compensation point of 80 mg ~ 100 mg / l . Between the compensation concentration and the saturation concentration, the higher the CO2 concentration, the stronger the photosynthesis and the more obvious the stimulation effect