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[目的]研究阿特拉津对皇竹草生长的影响。[方法]通过盆栽试验,研究了5个阿特拉津浓度(20、50、100、200、500mg/kg)下皇竹草(Pennisetum hydridum)株高、生物量、根冠比和叶绿素含量的变化。[结果]结果表明,低浓度的阿特拉津(20、50mg/kg)对皇竹草株高、生物量均无显著影响;中等浓度的阿特拉津(100、200mg/kg)显著降低了皇竹草的生物量,分别降低了34.1%和36.4%,而对株高无显著影响;高浓度的阿特拉津(500mg/kg)对皇竹草生物量和株高均有显著降低的效应,最大降幅分别为40.6%和20.0%;各浓度的阿特拉津对皇竹草根冠比和叶绿素含量影响不显著。[结论]皇竹草对阿特拉津胁迫具有较强的耐受力。
[Objective] To study the effect of atrazine on the growth of imperial bamboo. [Method] The pot experiment was conducted to study the plant height, biomass, root / shoot ratio and chlorophyll content of five Pennisetum hydridums at the concentrations of 20, 50, 100, 200 and 500 mg / kg Variety. [Result] The results showed that low concentration of atrazine (20, 50 mg / kg) had no significant effect on plant height and biomass of imperial bamboo; the middle concentration of atrazine (100, 200 mg / kg) The biomass of Kingfisher was reduced by 34.1% and 36.4%, respectively, but had no significant effect on plant height. High concentration of atrazine (500mg / kg) significantly reduced the biomass and plant height With the maximum decrease of 40.6% and 20.0%, respectively. The effects of different concentrations of atrazine on root and shoot ratio and chlorophyll content were not significant. [Conclusion] Celastrus angulata was more tolerant to atrazine stress.