盆栽芦荟和虎皮兰对室内空气甲醛净化及耐受能力的研究

目的 研究及比较盆栽芦荟和虎皮兰对室内空气甲醛的净化及耐受能力. 方法 选择芦荟、虎皮兰两种常见、易护理且经济的盆栽植物进行三个方面的实验,即植物吸收甲醛能力的判断、不同植物吸收甲醛能力大小的比较、植物对甲醛耐受能力的研究.测得实验前后甲醛的变化量来反映植物对甲醛的净化效果,通过观察实验组植物叶片是否出现斑点、叶片枯萎、叶片坏死情况来反映绿色植物对甲醛的耐受性. 结果 实验组的甲醛浓度比对照组的甲醛浓度明显降低(P＜0.01),且虎皮兰组甲醛浓度低于芦荟组(P＜0.05);实验组叶片斑点增加、叶尖变黄、叶片变黄、叶片枯死等发生情况均高于对照组(P＜0.05),且对虎皮兰的损伤大于芦荟(P＜0.05). 结论 芦荟和虎皮兰均能净化室内空气污染物甲醛;芦荟和虎皮兰净化甲醛的能力有差异,虎皮兰比芦荟净化甲醛的能力强;甲醛对盆栽绿色植物有损伤,虎皮兰比芦荟的耐受性低.

Study on the Purification and Tolerance Ability of Bonsai Aloe and Snake Plant to Formaldehyde in Indoor Air

Objective To study and compare the purification and tolerance ability of Bonsai Aloe and Snake Plant to formaldehyde in indoor air. Methods Bonsai Aloe and Snake Plant were studied and compared on their abilities to absorb and tolerate formaldehyde in indoor air.Their purification effects were studied by detecting the formaldehyde in indoor air before and after the plants were placed in the room,with a room without plant set as the control.Their tolerance ability to formaldehyde was determined by observing the changes of the leaves,such as appearing of spots,blight,and necrosis. Results The formaldehyde concentrations in the indoor air of the experimental groups after plants placement were significantly lower than that of the control group（P0.01）,and the concentration in the Snake Plant group was statistically lower than that in the Bonsai Aloe group（P0.05）.More spotted leaves,yellow leaves and necrotic leaves occurred in the experimental groups.The injury of formaldehyde on Snake Plant was severer than that on Bonsai Aloe（P0.05）. Conclusions The Snake Plant and Bonsai Aloe both can absorb formaldehyde in the indoor air,and the Snake Plant is more effective than the Bonsai Aloe.Formaldehyde can injury both plants,and the Snake Plant is less tolerant than the Bonsai Aloe.