毒害植物的

Eichhornia crassipes and Hosta ventricosa is used as experimental material to study Cd stress on the two plants growth, chlorophyll content, MDA and root peroxidase activity and other physiological indicators to investigate the effect of Cd on the toxic effect of higher plants,with a view to Cd pollution Phytoremediation providing a theoretical basis.

以凤眼莲和紫萼玉簪为实验材料，研究镉胁迫对凤眼莲和紫萼玉簪的生长、叶绿素含量、丙二醛含量及根系过氧化物酶活性等生理指标的影响，探讨镉对高等植物的毒害效应，以期为重金属镉污染的植物修复技术提供理论依据。

The harm caused by naphthalene pollution might be due to the peroxidation damage to cell membrane system.

萘污染对水生植物的毒害作用可能是自由基对膜脂的过氧化损伤引起的。

Poison ivy and poison oak rashes are caused by an allergy to the resin of these plants, called Rhus plants.

毒害常春藤而且毒害橡木制的轻率对这些植物的树脂由一个过敏症所引起，认为 Rhus 是植物。

Several different adhesives are used for securing the plant onto the mount. For example; Liquid Nails, hot glue, Goop, Tilly Tacker or E6000. We recommend E6000 because it is colorless, extremely strong, water proof, and non-toxic to plants. Use a xxxall amount of adhesive near the base of the plant, but not on the bottom. Avoid covering the area where the roots form. Then using a soft coated wire such as telephone wire or floral wire, tie the plant securely until the adhesive sets.

定植的方法是很多的，例如：用液体的热溶胶，镁尖糊块，高压平头器或E6000的胶水都可以，我们推荐的E6000是无味，粘性强，防水，对植株没有毒害作用，用少量的黏附在植株的基部，但不是底部，避免影响到根部，然后用如电话线状的金属丝或植物的茎秆把植株固定住，直到植株已经牢固。

A hydroponical experiment was carried out to study the toxicity of copper, cadmium and their combined pollution on ultrastructure of Commelina bengalensis Linn. Transmission Electron Microscope was used to investigate the effect of heavy metal on ultrastructure of different parts of plants.

为了解铜、镉对泡泡草根、茎、叶细胞亚显微结构的毒害及作用位点，以期为进一步研究鸭跖草属植物的耐重金属机理提供理论基础，本文通过透射电子显微技术研究了75 μmol·L-1铜和50μml·L-1镉及其交互污染对泡泡草根、茎、叶细胞超微结构的影响和铜、镉在细胞中的分布。

By imitating different concentration of Cd2+ Cu2+ Cr3+ Cr6+and Zn2+polluted water environment,we mainly studied their toxic effects on aquatic piants by means of measurement of physiologicai indexes and electron microscopy observation as well as the relieving to Cu2+ injury of antioxidase enzyme system in Lemna minor L. and Vallisneria asiatica Miki in this paper by throwing Ce.the experimental results showed that Cd2+ Cu2+ Cr3+ Cr6+ and Zn2+ might injure photosynthetic systems, protective enzyme system, substance metabolism systems and cell ultrastructure of the plant.

本文通过模拟不同浓度梯度的重金属Cd~(2+)、Cu~(2+)、Cr~(3+)、Cr~(6+)和Zn~(2+)污染环境，利用生理生化测定、扫描电镜、透射电镜、气相色谱及激光共聚焦等实验手段，研究了四种金属离子对不同生态型的水生植物的毒害影响，初步探索了Ce对浮萍Cu害的缓解效应和La、Zn及其交互作用对浮萍活性氧清除系统影响。

To understand the toxicity mechanisms of mixed heavy metals on aquatic plant,indicators of algea growth rate,content of reduced glutathione,activities of glutathione S-transferase and glutathione peroxidase of green algae, Scenedesmus quadricauda were measured to analyze the individual and joint toxic effects of lead and mercury.

为进一步了解重金属复合污染对水生植物产生毒害作用的机制，以单细胞藻类生长及细胞内还原型谷胱甘肽含量、谷胱甘肽-S-转移酶和谷胱甘肽过氧化物酶活性为指标，对铅和汞单一及联合胁迫对四尾栅藻的毒性作用进行了研究。

Nickel is both nutritional and toxical for plants, animals and human beings.

镍对动、植物和人体是兼具营养与毒害作用的元素。

There are many of studies on toxicant mechanisms of heavy metals against plants in China and abroad, which will be helpful to alleviate poison and avoid the hazard of heavy metal contamination.

重金属对植物体的毒害在国内外已经有大量的研究，研究重金属对植物的毒害机理可以为减轻重金属对植物体的毒害，规避重金属风险提供理论依据。

Desmids, diatoms and horsetails, and in smaller amounts in the cell walls of many higher plants, especially grasses, where it can be a useful taxonomic feature.

更多高等植物的细胞壁中则含量较少，尤其是禾本科植物，硅对其具有有效的毒害作用。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。