泽兰

Eupatorium adenophorum is one of main invasive plants in China and has caused great economic losses. A study was conducted to determine the biomass allocation, leaf morphology and growth response of E.

紫茎泽兰是我国主要外来入侵植物之一，在我国西南地区迅速传播，引起了巨大的经济损失。

Rhizomatous plant of central and southeastern United States and West Indies having large showy heads of clear blue flowers; sometimes placed in genus Eupatorium .

美国东南和西印度的花冠很大的菊科植物，根状茎，亮蓝花色；有时归为泽兰属。

Three sample plots of different habitat were selected in Yunnan and Sichuan to study effects of invasion of Eupatorium adenophorum on content of available nitrogen,available phosphorus and available potassium in soil.

选取云南、四川省3个不同生境作为样地，研究紫茎泽兰入侵对不同生态系统土壤中碱解氮、速效磷、速效钾含量的影响。

The pathogenicity of 19 strains of Alternaria alternata isolated from Eupatorium adenophorum was studied. 5.8S rDNA, ITS1 and ITS2 sequences of 22 strains from crofton weed and other plants were analyzed.

对分离自紫茎泽兰的19个链格孢菌菌株的致病性进行了比较研究，并对这19个菌株和其它来源的3个菌株的5.8S rDNA及其两侧的ITS1区和ITS2区进行了序列分析。

And the flowers of a Mock Orange, and Taiwanese Asters both attract butterflies.

而台湾的海桐花和高士佛泽兰，都是蝶类喜爱的植物。

Method］ With Altingia excelsa, Eupatorium adenophorum, Jatropha curcas, Polygonum flaccidum and Podocarpus nagi as tested plants, the extracts were extracted by the dipping method. The contact toxicity of plant extracts on A.nerii were detected by micro spot method in the laboratory.

方法］以高阿丁枫、膏桐、辣蓼、竹柏、紫茎泽兰作为供试植物，采用浸渍法提取得到其提取物，在室内采用微量点滴法对夹竹桃蚜触杀效果进行测定。

The invasion of Eupatorium adenophorum Sprengel may occupy the living space of other plant species, reduce the native biodiversity and ecosystem productivity, and cause serious ecological consequences.

紫茎泽兰入侵会挤占其他物种的生存空间，降低生物多样性和生态系统生产力，带来诸多负面生态效应。

With the methods of hydroponics and paraffin dissection, influences of main-functional allelochemicals derived from the leachates of Ageratina adenophora Sprengel on anatomical structures of upland rice seedling root tips were investigated in this paper.

采用营养液培养法和石蜡切片技术，研究了紫茎泽兰淋溶主效化感物质对旱稻幼苗根尖解剖结构的影响。

Ageratina adenophora Sprengel (Synonym: Eupatorium adenophora Sprengel), originally found in Mexico and Costarica, is a noxious invasive alien weed, and it has become widespread in many countries and regions.

起源于中美洲墨西哥和哥斯达黎加地带的菊科植物紫茎泽兰(Ageratina adenophora Sprengel，同名：Eupatorium adenophrioum Sprengel)，作为一种典型的恶性入侵杂草，现已在全球很多国家和地区广泛分布，并在这些地区造成了严重的经济和生物多样性损失，甚至对人畜健康构成了一定的威胁。

This study was carried out in laboratory and field by using the method of experimental ecology, the effects of storage conditions, superstratum of the ground, pH and temperatures on the seed germination were observed systematically.

本研究采用实验生态学的方法，在室内外系统研究了储藏条件、地面覆盖物、pH值及温度对紫茎泽兰种子萌发的影响。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。