不同农药对绿萝生长发育影响研究
时间:2018-06-06 17:56 来源:毕业论文 作者:毕业论文 点击:次
| 摘要：本实验以绿萝为材料，以绿萝株高、新增茎叶重量等指标为标志，研究低剂量百菌清、吡蚜酮对绿萝生长的刺激效应，探讨农药与植物生长之间的关系，以期为农药的生态风险评估提供依据。试验结果表明0.1、0.2ppm吡蚜酮处理后35天，能促进绿萝株高增长，同对照相比，绿萝株高分别增加51.91%与82.13%；百菌清对绿萝株高增长无显著刺激作用。同对照相比，处理后35天，32、64ppm百菌清处理对绿萝根长增长有显著促进作用，分别增加72.72%、67.54%；吡蚜酮处理可诱导绿萝茎叶重量增长的Hormesis效应，其Hormesis效应为77.89%，最大刺激效应为2.027。23841 毕业论文关键词： 农药；绿萝；百菌清；吡蚜酮；Hormesis效应 The different pesticides’ influence on the growth and development of Scindapsus aureum Abstract: In this experiment, Scindapsus aureum as materials to Scindapsus height, weight and other indicators of new leaf logo, study of low-dose chlorothalonil, Pymetrozine stimulating effect on the growth of scindapsus aureum, explore the relationship between pesticides and plant growth, to provide a basis for ecological risk assessment of pesticides. The results showed that after 0.1,0.2 ppm Pymetrozine treatment 35 days, can promote scindapsus aureum height growth, compared with the control, scindapsus aureum plant height increased 51.91% and 82.13%, respectively; chlorothalonil Scindapsus height of no significant growth stimulation . Compared with the control, 35 days, 32,64 ppm chlorothalonil treatment on long scindapsus aureum radish root growth has a significant role in promoting post-treatment, increased 72.72%, respectively, 67.54%; Pymetrozine treatment can induce the growth of scindapsus aureum leaf weight Hormesis effect, its Hormesis effect was 77.89%, the maximum stimulating effect was 2.027. Keywords: Pesticides; Scindapsus aureus; Chlorothalonil; Pymetrozine; Hormesis 目录 1 绪论 1 1.1 绿萝的生态学特征及观赏价值 1 1.2 HORMESIS效应的介绍 1 1.2.1 Hormesis的概念 1 1.2.2 Hormesis 量效曲线 1 1.3 研究HORMESIS效应的意义 2 1.3.1 Hormesis的机制 2 1.3.2 Hormesis的普遍性 2 1.3.3 Hormesis的生物学意义 2 1.4 国内外研究HORMESIS效应的概况 3 1.5 农药对害虫天敌的HORMESIS效应以及对土壤的影响 3 1.5.1 农药对害虫天敌生长发育的Hormesis效应 3 1.5.2 农药对天敌控害能力Hormesis效应 3 1.6 HORMESIS 的实验证据和学术争论点 3 2 材料与方法 5 2.1 供试绿萝、农药 5 2.2 农药浓度配制方法 5 2.3 绿萝培养 5 2.4 绿萝生长量测定 5 2.4.1 绿萝根长、株高的测定 5 2.4.2 绿萝根重及新增茎叶重量测定 5 2.5 数据处理 6 3 结果与分析 7 3.1 农药对绿萝株高的影响 7 3.2 农药对绿萝根长的影响 10 3.3 农药对绿萝根重的影响 10 3.4 农药对绿萝新增茎叶重量影响 13 4 讨论 15 (责任编辑：qin) |