It could be found that the effects of disturbances on plant species composition and diversity were related to the characteristics of disturbances and plant communities, bionomic of plant species, and the resources of the disturbed locations.

在介紹了干擾的概念及其性質(zhì)和干擾對(duì)物種多樣性影響的有關(guān)假說(shuō)基礎(chǔ)上高清无码黄在线，以森林干擾為主要對(duì)象，探討了干擾對(duì)植物群落物種組成的影響免费观看黄a一级视频孕妇，并從干擾類型AAA搡老熟女国产、干擾強(qiáng)度和干擾頻率等幾個(gè)方面闡述了干擾對(duì)植物群落物種多樣性的影響；另外色色色色色色色色色吧，還分析了重要的小尺度干擾―林隙在該方面的影響黄色网站免费精品在线观看。

Chalcone synthase (CHS, EC 2. 3.1. 74), is the first key enzyme in the biosynthesis of plant flavonoids, and the key enzyme of plant secondary metabolism. It has great influence on plant physiological function.

查爾酮合成酶(chalcone synthase，CHS成年熟美女一级黃色A片，EC 2.3.1.74)啪啪啪一级，是植物類黃酮物質(zhì)合成途徑中的第一個(gè)酶，也是植物次生代謝途徑中的關(guān)鍵酶之一久久国产精品嫖妓，對(duì)植物具有非常重要的生理意義欧美另类激情。

Plant Virology 2 S T. H. Chen, FThe course will give conventional and molecular level of plant viruses in order to help the students to get much theoretical and practical knowledge about plant virology. The contents cover the molecular structure of virion and genome, virus isolation, dentification and purification, transmission, variation,ecology, nomenclature and classification, diagnosis and control.

本課程除傳統(tǒng)植物病毒學(xué)范疇外，并涵蓋從分子層次討論植物病毒之構(gòu)造亚欧刺激视频在线播放，引起之植物病害色友视频在线观看免费，田間發(fā)生及防治，期能達(dá)到理論與實(shí)務(wù)并重日韩欧美爱爱一区二区；內(nèi)容包括植物病毒分子層次的構(gòu)造及核酸組成国产高清在线视频一区二区，病毒分離、鑒定與純化在线观看成人短视频网站，在寄主體內(nèi)之增殖及轉(zhuǎn)移，媒介傳播农村一级无码、遺傳及變異日韩3级电影网，其引起之病害及田間發(fā)生生態(tài)與防治。

Field experiments were conducted to investigate effects of three density treatments including high(160000 plant/hm2),middle(120000 plant/hm2)and low(80000 plant/hm2)densities on carbon-nitrogen metabolism,yield of Desmodium styracifolium.

采用田間試驗(yàn)研究了高(160000株/hm2)日韩av一级免费在线观看网站、中(120000株/hm2)打开免费黄色网站在线观看、低(80000株/hm2)3個(gè)密度處理對(duì)廣金錢草碳氮代謝、單株產(chǎn)量和單位面積產(chǎn)量的影響www热色com。

Through the multiple comparisons, the production, single-potato weight, number of tubers per plant, per unit area of main stem number, plant height, the rate of commodity potato, or diseased plant rate, diseasedness index of the use of small whole potato seeds were better than that of the traditional cuts planting, but analysis of variance revealed that differences between the two was not significant.

多重比較表明日本人人干，無(wú)論是產(chǎn)量、單薯重量欧美大黑屄、單株塊莖數(shù)黄色A片视频、單位面積主莖數(shù)、株高九九精品国模私拍在线观看、商品薯率A片网站导航，還是病株率、病指日韩孕妇自拍视频网站大全在线观看，利用小整薯播種均優(yōu)于傳統(tǒng)的切塊播種全国精品第一区黄片，但通過(guò)方差分析發(fā)現(xiàn)，二者之間差異不顯著。

Plant protoplasts from several species of plant were fused successfully by electrofusion method, and a good procedure for electrofusion of plant protoplasts in wideinterval chamber was established according to the results.

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Sympegma regelii community, a rangeland desert vegetation, has the highest Shannon-Winner species diversity indices (1.706); the communities of Haloxylon ammodendron and Ephedra przewalskii, which have obvious feature of desert vegetation, are in the middle in species diversity indices (0.875-0.890); the communities of Calligonum mongolicum, Populus euphratica, Tamarix ramosissima and Glycyrrhiza inflata, characterized by desert forest of which saline desert bushes and saline meadows are scattered in the communities, have lowest value of the species diversity indices (0.079-0.495). 3 The structure of desert plant community is dominated by the bush layer. The species diversity indices of bush layer (0.769-1.451) is much higher than that of herb layer (0.193-0.254), and the diversity in herb layer is strongly influenced by bush layer. 4 The species diversity of desert plant communities shows a gradient of change with respect to longitude, latitude and elevation. For example, rangeland plant Sympegma regelii, with a high level of diversity indices (1.706), is in transition to desert plants Haloxylon ammodendronn community (with a low level of diversity indices of 1.379) in a longitude gradient and to saline Tamarix ramosessima community (with a low level of diversity indices of 0.376) in a latitude gradient. Calligonum mongolicum community, with a low level of species diversity (0.819), is in transition to Ephedra przewalskii (with a low level of diversity indices of 0.890) and Haloxylon ammondendron community (with the diversity indices of 0.645) in an elevational gradient.

群落Shannon-Wiener物種多樣性水平表現(xiàn)為合頭草群落最高(1.706)，具有草原化荒漠植被類型的成分av免费在线观看网站大全；梭梭群落久久国产精品免费一区二区三、膜果麻黃群落居中(0.875~0.890)，荒漠植被類型特征明顯欧美永久视频免费；沙拐棗群落www.玖玖爱免费视频、胡楊群落、多枝檉柳群落欧美性爱三、脹果甘草群落較低(0.079~0.495)china农村野外妇女BBw，荒漠林、鹽地沙生灌叢及鹽化草甸植被均有零星分布免费一级黄片视频。3荒漠植物群落結(jié)構(gòu)層次中国产无套推油按摩女视频推油，灌木層占居主導(dǎo)地位，群落灌木層物種多樣性水平(0.769~1.451)遠(yuǎn)遠(yuǎn)大于草本層(0.193~0.254)国产二区视频在线观看，且草本層物種多樣性受灌木層影響較大在在线黄色视频。4荒漠植物群落物種多樣性分布格局表現(xiàn)為經(jīng)向、緯向和海拔梯度的變化免费无码一级黄色视频，經(jīng)向肏屄视频网站、緯向變化為物種多樣性水平較高的草原化植物合頭草群落(1.076)向物種多樣性水平較低的荒漠植物梭梭群落(1.379)和鹽化植物多枝檉柳群落(0.376)的過(guò)渡，海拔梯度則呈現(xiàn)低水平的沙拐棗群落(0.819)到高水平的膜果麻黃群落(0.890)向低水平的梭梭群落(0.645)變化国产一级在线播放。

The growth of a plant on the leaf of another plant. Such a plant is termed an epiphyll, or is described as epiphyllous.

指一種植物附生在另一種植物的葉片上黄片com.，前者被稱為葉附生植物或描述為葉上著生。

As a result,120 species and 24 varieties of the medical plant of Labiatae have been found in Guizhou.42 species and 4 varieties of the medical plant of Gesneriaceae have been found in Guizhou.Among them,there are 1 species new species of the medical plant,2 species new record genus and species of geographic...

結(jié)果發(fā)現(xiàn)貴州現(xiàn)有唇形科藥用植物120種24變種国产av一码二码三码无码，苦苣苔科藥用植物42種4變種一级片毛片网址，其中1種為藥用植物新種，2種為貴州地理分布新記錄屬和種中文字幕无码毛片一级，1種為貴州地理分布新記錄種一级片黄色网址，7種4變種為貴州特有藥用植物，31種3變種為貴州藥用新資源婷婷丁香五月综合中文字幕。

According to the distribution of species and amount, the author makes a PCA analysis to the different habitats. The analysis of hierarchical cluster to different habitat is according to the distribution of species. According to the results of the two ways of analysis and the factual condition of environment, the environment of Daqinggou is divided into 3 types of habitat that are described as the hygric plant community in the bottom of ditch, xerophytic plant community in the top of ditch and single type plant community.

以直翅目昆蟲種類和數(shù)量的分布為屬性對(duì)不同生境作PCA分析并以直翅目昆蟲種類分布為屬性作等級(jí)聚類分析在线色av，兩種分析方法所得結(jié)果十分相似，結(jié)合分析結(jié)果和實(shí)際情況將大青溝7種不同生境分為3類火热福利视频导航，分別命名為溝底濕生植物群落猛男好爽好爽男人天堂，包括水曲柳植物群落、湖邊濕地植物群落和稻田植物群落一级毛片黄久久久免费看；溝上干早植物群落午夜三级免费视频，包括沙丘草地和大果榆植物群落一级看片免费视频精品；單一型植物群落，包括人工針葉林植物群落和蒙古棟植物群落jizz在线视频。