7种作物对酞酸酯污染的胁迫响应评价

发布时间：2018-08-08 16:36

【摘要】：通过水培试验,研究不同PAEs污染物及其浓度对7种作物的胁迫响应,以期为酞酸酯污染土壤的农作物栽培以及植物修复提供理论依据。结果表明,DMP、DEP、DOP的不同浓度处理对7种作物生物量的影响不同,7种作物的茎叶与根部对3种PAEs的响应也不同。冬瓜、豆角、番茄的茎叶对PAEs污染物的响应明显大于根部。DOP对黄瓜的根部无影响,DMP对香根草的根部无影响。胁迫响应综合评价结果显示,7种作物中对3种PAEs污染物胁迫响应为中度胁迫的有2种(豆角、番茄),重度胁迫的有5种(冬瓜、大豆、黄瓜、空心菜和香根草)。采用耐性指数法对不同作物的地上部生长、地下部生长耐性进行分类,属DMP普通型的作物有3种(番茄、冬瓜和豆角),属DEP普通型的作物有5种(番茄、大豆、空心菜、冬瓜和豆角),属DOP普通型的作物有2种(大豆、空心菜),香根草是DMP、DEP和DOP的耐性型作物。
[Abstract]:In order to provide theoretical basis for crop cultivation and phytoremediation of phthalate contaminated soil, the stress responses of different PAEs pollutants and their concentrations to 7 crops were studied by hydroponic experiments. The results showed that the effects of different concentrations of DMPP-DEPDOP on the biomass of 7 crops were different. The responses of stems, leaves and roots of 7 crops to three kinds of PAEs were also different. The responses of stem and leaf of winter melon, bean and tomato to PAEs were significantly higher than that of root. Dope had no effect on the root of cucumber. The results of comprehensive assessment of stress response showed that 2 species (soybean, tomato) and 5 species (winter melon, soybean, cucumber, caraway and vetiver) had moderate stress response to three PAEs pollutants in 7 crops, and 5 species under severe stress (winter melon, soybean, cucumber, caraway and vetiver). The tolerance index method was used to classify the aboveground growth and underground growth tolerance of different crops. There were 3 kinds of DMP common crops (tomato, winter melon and bean), and 5 kinds of DEP common crops (tomato, soybean, chestnut). There are two kinds of DOP common crops (soybean, Vetivera), and Vetiver is the tolerant crop of DMP and DOP.
【作者单位】：环境保护部南京环境科学研究所;
【基金】：中央级公益性科研院所基本科研业务费专项“气候变化背景下西藏高原植被格局变化及气候风险研究”~~
【分类号】：X503.231

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