【摘要】 建立受控密闭系统，研究在动物和红萍共存情况下，系统中Ｏ２－ＣＯ２浓度的变化规律。红萍的光合作用与狗的呼吸作用相辅相成，使系统中Ｏ２－ＣＯ２浓度从急骤变化达到基本保持平衡。由于系统中Ｏ２浓度大于１６％，ＣＯ２浓度小于２％，狗生活正常；而仅有动物存在情况下，狗消耗系统中Ｏ２并释放ＣＯ２，很快出现严重缺Ｏ２和ＣＯ２中毒症状。更多还原

【Abstract】 The fluctuation regularity of O2CO2 concentration in a controlled airtight system which Azolla and animals growing together was studiedThe O2CO2 concentration of this system can nearly keep balance due to the interaction of photosynthesis of Azolla and breath of dogDog can keep normally as O2 concentration more than 16% and CO2 concentration less than 2% in the systemWhen there is only the dog in the system,the dog consumed O2 and released CO2,and then appeared the symbol of O2 deficiency and CO2 poisoningThe possibility of Azolla as a source of O2 in CELSS system was discussed.更多还原