须根系

冠状根是须根系的主要组成，对作物的固着和养分、水分吸收有着重要意义。

Crown roots are main components of the fibrous root system and important for crops to anchor and absorb water and nutrition .

采用解剖学的方法对分布于广西的9种野生苏铁和1种栽培苏铁植物的根系类型及肉质根的结构进行解剖研究，结果表明：（1）苏铁属植物的根系属须根系而不是直根系。

The method of anatomy is used to study the root system and fleshy root structure of 9 species of wild Cycas and 1 species of cultivated Cycas in Guangxi . The results show that : ( 1 ) Cycas belong to fibrous root system but not taproot system .

脂肪含量相近时，表面粗糙或具有细密绒毛的叶片富集PAHs的能力较强，须根系根吸收PAHs的能力强于直根系根。

With close lipid concentrations , leaves with pubescence or rough surface were found to have stronger capability in uptaking PAHs than the others , and the capability of the fibre was stronger than the taproot .

而隐子草则以增加根系生物量投入比例、须根系形态及其分布的浅表化来适应固定沙地的旱化土壤水分条件。

Cleistogenes squarrosa is adapted to the arid conditions of stabilized sand dunes due to its ( ability ) to increasing root biomass .

在块茎下端产生不定根，构成须根系，每条根均由表皮、皮层、中柱三部组成。

In the lower part of stem tuber produced adventitious roots , each comprising epidermis , cortex and stele , which could form fibrous root system .

种植须根系植物的实验结果表明，不加吸水树脂的空白样失水速率快，而加入吸水树脂后，失水速率较空白样明显减慢。

The results indicated that the water lose speed of sample without water absorbent resin was quick , however , lose speed of sample became slow obviously when water absorbent resin was added to .