【正文】
indoor environment, but also a clean indoor air, an effective way to regulate the indoor climate. But in the indoor cultivation of perennial flowers is very particular. To understand how to choose perennial flowers, perennial flowers should start talking about the purification. There are four perennial flowers purification: 1, bactericidal antimicrobial. Some perennial flowers can kill certain bacteria can secrete bactericidal factor, inhibit Mycobacterium tuberculosis, dysentery and typhoid bacillus bacteria growth, help keep indoor air clean. 2, the absorption of carbon dioxide. Most perennial flowers in the daytime for photosynthesis, absorb carbon dioxide and release oxygen at night to breathe, absorb oxygen and release carbon dioxide. 3, the