狐尾

This study tried to select potentially the most aggressive species in hope of facilitating the making and the assessment of future conservation strategies. They include terrestrial species of Bidens pilosa var. radiata, Imperata cylindrical var. major, Brachiaria mutica, Paspalum distichum, Leucaena leucocephala and aquatic species of Egeria densa, Myriophyllum aqualicum, Eichhornia crassipes, Pistia stratiotes, Alternanthera philoxeroides.

本研究提出最具入侵潜力的外来植物，以作为未来保育策略之评估指标，主要有大花咸丰草、白茅、巴拉草、双穗雀稗、银合欢、水蕴草、粉绿狐尾藻、布袋莲、大萍、空心莲子草等。

Weathered scales encase the trunk of a foxtail pine in California's Sierra Nevada Mountains.

饱经风霜的鳞屑包围一棵狐尾松的树干在加利福尼亚的内华达山脉。

European foxtail naturalized in North America; often a troublesome weed.

美国已经引入的欧洲狐尾植物；通常是一种害草。

Small pine of western North America; having smooth gray-white bark and soft brittle wood; similar to limber pine .

北美西部一种小型松树；光滑的灰白色树皮，木质脆软；类似于狐尾松。

The Chinese grass carp is one. It eats large amounts of water milfoil and other weeds that grow under the water surface.

中国草鱼即是一例，它能吃掉大量狐尾草之类的长在水面下的杂草。

In this study,under laboratory conditions,using traditional microbiological culture method,select the Pb2+ stress training of Pistia stratiote and Myriophyllum spicatum L. under water culture, through the changs of root- microbial of Pistia stratiote and Myriophyllum spicatum L.,the results show that bacteria,fungi,actinomycetes have different concentrations under Pb2+ stress. It is specificity of ammonification, nitrification,andanti-Nitrosation after Pb2+ stress.

中文摘要：本研究在实验室条件下，用传统的微生物培养法，选择重金属离子Pb2+在水培条件下对大薸和穗状狐尾藻进行胁迫培养，通过测定大薸和穗状狐尾藻根系的微生物区系及与氮循环有关的四种细菌的数量变化发现：细菌、真菌、放线菌对重金属Pb2+的不同浓度的敏感性不同；重金属Pb2+胁迫对氨化、硝化、亚硝化和反硝化四类细菌的影响也表现出各自的特殊性。

But for Myriophyllum spicatum, the optimal concentration of phosphorus was 0.4 mg·L-1. At 0.2 mg·L-1phosphorus, the height and root-length of Hydrilla Verticillata was greater than that of Myriophyllum spicatum, while at 0.4 mg·L-1 phosphorus the reverse was true.

两种沉水植物株高和根长增加量在磷质量浓度小于0.2 mg·L-1时，表现为轮叶黑藻大于穗花狐尾藻；当磷质量浓度大于0.4 mg·L-1时，表现为穗花狐尾藻大于轮叶黑藻。

MDA content, cell division , he activities of NR, CAT, POD and SOD of Pistia sagittifolia and Myriophyllum Spicatum with heavy metal,s ion concentration to appear a trend of ascending firstly and desending secondly . This trend explains that Pistia sagittifolia and Myriophyllum Spicatum on the Toxic Effects have similarities under handing the single Pb2+ and Hg2+. As the range of the concentration which each index is arriving at the maximum is different, this also indicates that there are some differences of the Toxic Effects between Pistia sagittifolia and Myriophyllum Spicatum under handing the single Pb2+ and Hg2

丙二醛含量、脂膜透性、硝酸还原酶活性、过氧化物酶活性、超氧化物歧化酶活性、过氧化氢酶活性随重金属离子浓度的增加呈先升后降趋势，说明在单一Pb2+和Hg2+处理下大薸和穗状狐尾藻毒害效应具有相似性；但各指标到达最大值的浓度范围不同，又说明单一Pb2+和Hg2+处理下大薸和穗状狐尾藻毒害效应具有差异性。

It's founded that Pistia stratiotes' soluble protein content,proline,peroxidase and catalase increased first and decreased afterwards with the augmenting of Cd2+ and Cr6+ concentration in the solution;With Cd2+ and Cr6+ concentration augmenting,SOD activity of Pistia Stratiotes increased first and decreased afterwards;But with Cd2+ Concentration augmenting, SOD Activity of Myriophyllum spicatum increased first and decreased afterwards; with Cr6+ concentration augmenting,SOD activity Myriophyllum spicatum droped at all times.

结果表明：随着水体Cd2+和Cr6+浓度的增加，大薸和穗状狐尾藻的可溶性蛋白含量、脯氨酸、叶绿素、丙二醛含量、硝酸还原酶活性、过氧化物酶活性、过氧化氢酶活性都是先升高后降低；随着Cd2+和Cr6+浓度的增加大薸超氧化物歧化酶活性先升后降；而穗状狐尾藻随着Cd2+浓度的增加SOD活性先升后降，随着Cr6+浓度的增加，SOD活性直线下降。

Select a brush nib of Hengshui wolf yellow tail, Shannon Myriophyllum, Nanshan wool, sheep should be, white horse hair, wool and other animal ui remains as raw material, the use of bamboo pen, Shichiku, Chiloscyllium, Bamboo, bamboo and other materials crassipes, pen on the embedded loaded teeth, bone, horn, bamboo, hardwood and many other top-style mouth.

衡水毛笔笔尖选取黄狼尾、香狐尾、南山羊毛、羊须、白马毛、牛耳毛等各种动物毫毛为原料，笔杆采用毛竹、紫竹、斑竹、湘妃竹、凤眼竹等材料，笔杆上嵌装牙、骨、角、竹、硬木等多种样式口顶。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。