泽兰

With an increase in the abundance and cover of Eupatorium adenophorum , there is a concurrent

摘 要 在紫茎泽兰入侵地，草本层中的本地植物的多度和盖度与紫茎泽兰的多度和盖

And the effects of floods on the spread and invasion of Eupatorium adenophorum are discussed based on the characteristics of serious soil and water loss and widely spread of this plant in jinsha River.

最后，根据金沙江流域水土流失严重和紫茎泽兰在该流域大面积分布的特点，探讨了洪水对紫茎泽兰扩散入侵的影响。

To discuss the relationship between the allelopathy of native plants in Guizhou and seed germination of Eupatorium adenophorum, the method of culture dishes with filter paper was used to research effects of 10 kinds of leaf aqueous extract on seed germination of Eupatorium adenophorum.

为探讨贵州本地植物的化感作用与紫茎泽兰种子萌发之间的关系，采用培养皿滤纸法，研究了10种供体植物的叶片浸提液对紫茎泽兰种子萌发的影响。

ConclusionThe experimental method can optimize the technique well and it also provide an appropriate way to synthetically utilize eupatorium adenophorum spreng.

结论使用响应曲面法能合理的优化紫茎泽兰中黄酮的提取工艺，为紫茎泽兰的综合利用提供参考。

A research platform was constructed for gene cloning and functional analysis in Eupatorium adenophorum in this study to provide a theoretical basis for the all-sided control of this malignant weed through the research in metabolic pathway related to allelochemical. By the study, we try to find out the coding gene of key enzyme which is related with the metabolism of allelochemical and clone some novel genes which can be used in agricultural production.

针对紫茎泽兰基因的克隆和功能分析建立了研究平台，通过开展紫茎泽兰的化感相关的代谢途径的研究，为这种恶性杂草的综合治理提供理论依据，以期能够找到调控化感物质代谢的关键酶的编码基因，发掘一些能够为农业生产所利用的新基因。

Prediction of spatial distribution of Eupatorium adenophorum Sprengel based on GARP model:A case study in Longitudinal Range-Gorge Region of Yunnan Province

利用云南纵向岭谷区紫茎泽兰的分布及其环境因子数据，通过GARP模型预测了紫茎泽兰的潜在入侵区域。

The results showed that allelochemicals of all 10 kinds of donor species have allelopathy on seed germination of Eupatorium adenophorum, and allelopathy increased with the enhancing of concentration.

结果表明：10种供体植物的化感物质对紫茎泽兰种子萌发均存在化感作用，并且随着浓度的升高，化感作用逐步增强，紫茎泽兰种子发芽速度指数比发芽率更为敏感。

The real-time quantitative PCR results showed that the expression level of two genes did not be affected by HHO obviously, whereas, the expression level of CHS gene had down regulation of different degree, except in 1.0 mM of HHO's concentration. It meaned that CHS gene is probably related with the metabolism of allelochemical.4. The Chalcone synthase gene (EaCHS1) of E.

荧光定量PCR的结果表明，萜类代谢途径中的两个关键酶基因的表达水平，没有因为羟基泽兰酮的诱导而表现出显著的差异；CHS基因的表达水平，除了在羟基泽兰酮处理浓度为1.0 mM时的差异不显著之外，在其他处理浓度均有不同程度的下调，说明该基因与化感物质的代谢途径相关。4。

Mean leaf area ratio （equal to IMR/SIA） and net assimilation rate were coequally important in determining the response of RGR to nitrogen levels in A.

随氮素的增加，紫茎泽兰的比叶面积降低，飞机草的SIA升高，但在所有氮水平下，前者的SIA都高于后者，紫茎泽兰SIA的变化规律更利于植物适应氮环境。

Utilis had significant selectivity for microhabitats of parasitizing. The parasitizing rate in valley microhabitat (31.7%) was the highest, followed by woodland of pine tree (28.1%), orchard (26.1%) and wasteland (13.5%). The sequence of parasitizing rate implied that the tendency of parasitizing rate increases with the increase of water content of soils in the microhabitats.

结果表明，泽兰实蝇在不同微生境中对紫茎泽兰寄生率的高低依次为沟谷地31.7%，马尾松林地28.1%，果园26.1%和撂荒地13.5%，这一顺序反映了泽兰实蝇的寄生率有随微生境中土壤含水量升高而增加的趋势。

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。