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二氧化碳是光合作用不可缺少的物质。由于温室中二氧化碳浓度过低，使蔬菜的光合作用不充分，因而生长慢，产量低，品质差，抗病力弱。增加温室内二氧化碳的浓度，可明显提高温室蔬菜的产量。该装置为适合农村使用的二氧化碳发生装置，它通过对煤炉燃烧后所产生的气体进行各种?
Carbon dioxide is an indispensable substance for photosynthesis. Due to the greenhouse carbon dioxide concentration is too low, the photosynthesis of vegetables is not sufficient, so slow growth, low yield, poor quality, disease resistance is weak. Increase the concentration of carbon dioxide in the greenhouse, can significantly increase the yield of greenhouse vegetables. The device is suitable for rural use of carbon dioxide generating device, which through the combustion of coal gas generated after a variety of?