一枝黄花

A spatial analysis technique was used to analyze the spatial distribution pattern of Solidago canadensis in Zhejiang Province in 2005. A stepwise regression method was applied to explore the relationship between the spatial distribution pattern of Solidago canadensis and anthropogenic activities.

应用GIS技术揭示了2005年浙江省加拿大一枝黄花发生面积和发生面积比例的空间分布格局，并结合回归统计方法，分析了该空间分布格局与人类活动的关系。

Solidago canadensi invaded more severely, the species was lower, the vegetable diversity of the plant community was smaller.

加拿大一枝黄花入侵的程度越严重，群落中物种丰富度越低，植物多样性越小。

Solidago canadensis, a perennial plant native to North America, is now spreading rapidly in China, especially in eastern China. The plant has already induced serious threats to native ecosystems and biodiversity and has caused considerable economic loss to those areas.

原产于北美的加拿大一枝黄花目前正在我国境内尤其是东部地区迅速扩散，对当地的社会经济、自然生态系统和生物多样性构成了严重威胁。

Study on reproductive biology of the invasive plant Solidago Canadensis.

外来入侵植物加拿大一枝黄花繁殖生物学研究。

On the one hand, because of its strong growth advantage, and other water weeds fight, fight fat, vying for sunlight; on the other hand is due to Solidago canadensis some of the roots secrete substances, these substances can inhibit the growth of sugar maple seedlings, but also inhibit own herbs, including germination.

一方面是因为其强大的生长优势，与其他杂草争水、争肥、争阳光；另一方面是由于加拿大一枝黄花的根部会分泌一些物质，这些物质可以抑制糖槭幼苗的生长，也抑制包括自身在内的草本植物的发芽。

Invasive Solidago canadensis, native Kummerowia striata, and their combination were grown under each Pb treatment.

每重土壤条件下分别种植入侵物种加拿大一枝黄花和本地物种鸡眼草及其组合。

The effects of solvent concentration, ratio of liquid to solid, microwave power and radiation time were evaluated by single factor and orthogonal experiments. The extraction conditions of flavones from Solidago canadensis by microwave-assisted method were optimized as 40:1 of the weight ratio of 50 % ethanol to twigs and microwave power of 700 W for 20 min.

并通过单因素实验和正交试验优化溶剂浓度、液固比、微波功率和微波辐射时间等微波提取条件，确定了微波辅助萃取法提取加拿大一枝黄花中黄酮类化合物的最佳条件为：乙醇浓度50%，液固比40：1，微波功率700W，微波辐射时间20min。

Solidago Canadensis L.1. The risk analysis was abided by the pest risk analysis criterion which was formulated by FAO and IPPC in order to establish the judgement index system of risk quantitative analysis on Solidago Canadensis L.

本文遵照联合国粮农组织国际植物保护公约的有害生物风险分析准则，构建了加拿大一枝黄花风险分析评估量化分析评判指标体系，并确定了各指标的评判标准和等级。

The effects maceration extract from Solidago canadensis in flower period on seed germination and grow of three crops including Capsicum annuum, Lycoperiscum esculetum and Braxxica chinensis var.

测定了入侵杂草加拿大一枝黄花开花期的茎、叶和花序水浸提液对辣椒、番茄、长梗白菜Brassica chinensis var。

The purpose of the present study is to investigate the mechanisms underling its successful invasion, and try to find some effective ways for its control.

本研究旨在探讨加拿大一枝黄花成功入侵的生物学机理，并试图为其控制提供科学依据。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。