珠芽

If you don't pick the bulbils off, they can easily take over.

如果你没有选择珠芽后，他们可以很容易地接管。

The result shows that:（1） As the tourist disturbance decrease, the important value of Carex lanceolata and Polygonum Viviparum increased, while the important value of Taraxacum mongolicum decrease.

结果表明：（1）随旅游干扰强度降低，马仑亚高山草甸的优势种披针苔草和珠芽蓼的重要值逐渐增大，而广生态幅植物蒲公英重要值却呈降低趋势。

Fern of tropical Asia having round buttonlike bulbils.

具有圆形纽扣状珠芽的一种亚洲热带地区的蕨类。

Jamaican fern having round buttonlike bulbils.

具有圆形纽扣状珠芽的一种牙买加蕨类。

The larger the niche overlap of two species is, the more similarly resource space they occupy. the niche overlap of Leontopodium leontopodioides and Polygonum viviparum amounts to 0.892 (in the community Ⅰ). This proves that they are very similar in utilizing the resources. In the general community, the niche overlaps among species are very low.

两个种群的生态位重叠值越大，说明它们占据越相似的资源空间，珠芽蓼和火绒草的生态位重叠值高达0.892，说明它们利用资源的相似性程度很高；在总群落中，各种群之间生态位重叠值都很低。

Nectaries not papillose; leaf axils sometimes with bulblets in distal part of stem.

蜜腺不具小乳突；有时的叶腋具小珠芽在茎上部。

Nectaries papillose on both surfaces; leaf axils without bulblets.

蜜腺具小乳突的在两面；没有小珠芽的叶腋。

It's shown that Carex stenocarpa, Polygonum viviparum, Kobresia capillifolia and Festuca ovina's niche breadth are wider; Potentilla sp., Polygonum viviparum, Geranium pratense and others' niche breadth are more narrow. The former belong to extensive species, it is high in adapting to soil acid and salification, the latter belong to equilibrium species, it's adaptability is weaker than the former.

结果表明，细果苔草、珠芽寥、线叶嵩草、羊茅等建群种和优势种的生态位最宽，适应土壤酸碱和盐渍化能力强，为泛化种；委陵菜、千叶蓍、草原老鹤草等伴生种生态位窄，适应酸碱和盐渍化能力弱，为特化种。

Bulb narrowly ovoid or cylindric; tunic black-brown, scarious; bulbels many, with several fleshy scales and hard tunics.

鳞茎狭卵球形或圆筒状；鳞茎皮黑棕色，干膜质；珠芽很多，带有几个肉的鳞片和硬鳞茎皮。

Leaves semiterete or triangular-semiterete; umbel ± with bulblets; filaments shorter than perianth segments

叶半圆柱形半圆柱形或三角形；伞形花序多少具小珠芽；比花被片花丝短 121 ALLIUM macrostemon 薤白

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。