【摘要】 在温室大棚中，以垂柳（Salix babylonica）、旱柳（Salix matsudana）、金丝垂柳（Salix alba‘Tristis’）为试验材料，分别测定2,4-二硝基苯酚（2,4-DNP）浓度分别为0、10、20 mg·L^-1处理下3种柳属植物的光合参数、生物量、耐受性指数（TI）和毒害系数（TF）等，综合评价3种柳属植物对2,4-DNP胁迫的耐受性及净化效果。结果表明：3种柳属植物对2,4-DNP胁迫的光合适应能力与耐受性均表现为：旱柳>金丝垂柳>垂柳；3种柳属植物对2,4-DNP的耐受性指数（TI）与毒害系数（TF）整体表现均为旱柳的TI最大，TF最小；3种柳属植物均可较好净化2,4-DNP污染。研究证实，3种柳属植物均可用于2,4-DNP污染环境的植物修复，且旱柳的应用潜力更大，研究结果可为2,4-DNP污染环境的植物修复提供参考。更多还原

【Abstract】 The photosynthetic parameters, biomass, tolerance index（TI）,toxicity factor（TF） and purification effect of three species of Salix（S.babylonica,S.matsudana and S.alba ‘Tristis’） were determined under 0,10 and 20 mg·L^-1 2,4-dinitrophenol（2,4-DNP） stress in greenhouse.The tolerance of three Salix species to 2,4-DNP stress and purification effect was evaluated through comprehensive evaluation.The results show: the photosynthetic adaptability and tolerance of the three Salix species of 2,4-DNP stress were all in the following order: S.matsudana>S.alba ‘Tristis’ >S.babylonica;the TI of S.matsudana namely 71 and 47 corresponding to 10 and 20 mg·L^-1 2,4-DNP,was the highest among three Salix species and TF of S.matsudana,namely 28.68 and 53.38 corresponding to 10 and 20 mg·L^-1 2,4-DNP,was the smallest among three Salix species.Three species of Salix can purify the 2,4-DNP polluted environment well.It is suggested that the three Salix species can be used for phytoremediation of 2,4-DNP polluted environment, and the application potential of S.matsudana is greater.The results of this research can provide reference for phytoremediatoon of of 2,4-DNP polluted environment.更多还原