畜禽废水胁迫对芦苇生理特性的影响

以两种浓度畜禽废水（高浓度畜禽废水原水和经一倍稀释的中浓度畜禽废水）胁迫湿地植物芦苇,研究其对芦苇根系活力、游离脯氨酸含量、丙二醛（MDA）含量以及质膜透性等生理生化指标的影响.结果表明,高浓度畜禽废水较中浓度畜禽废水对芦苇生理特性的影响更为强烈,两种浓度畜禽废水胁迫均促使芦苇根系活力明显上升、游离脯氨酸含量在急速下降后稳定在一个较低水平、MDA含量稳中有降、电解质渗漏现象不明显.由此说明芦苇在畜禽废水胁迫下具有较强的抗逆性和耐受性,可作为人工湿地处理畜禽废水的主要植物之一.

Effects of Livestock Wastewater on the Physiological Characteristics of Phragmites australis

Effects of livestock wastewater treatment on the physiological characteristics of Phragmites australis were investigated under stress of two concentration of livestock wastewater-high concentration of raw livestock wastewater and mid-concentration of livestock wastewater which was diluted to half concentration from the raw livestock wastewater. The results showed that the effects of high concentration livestock wastewater on Phragmites australis were stronger than that of mid-concentration livestock wastewater. Under the stress of livestock wastewater, activities of roots increased obviously. The content of proline decreased at the beginning and then kept steady-going at a low level. The content of malondialdehyde (MDA) reduced slowly and showed some undulation during the treatment and the electrolyte leakage was weak. Phragmites australis had very strong anti-adversity abilities and tolerances to livestock wastewater and can be used as one of the constructed wetland plants treating livestock wastewater.