修剪通过剪除部分树冠而改变根冠比。
修剪通过剪除部分树冠而改变根冠比。
感受光刺激的部位是根冠。
根和根冠被一鞘状结构，即胚根鞘所覆盖。
Both root and root cap are covered by a sheath-like structure called the coleorhiza.
氮、磷、钾浓度与萝卜的根冠比大小关系密切。
The R/T of radish was closely associated with N, P, K concentration.
形态结构类叶升麻根尖由根冠和顶端分生组织构成；
Anatomical Structures of ActaeaRoot: root tip is consisted of initial cells of calyptrogen, periblem and plerome;
施磷二铵处理的根冠比明显低于不施肥处理和施尿素处理；
Root-shoot ratio is the lowest in the diammonium orthophosphate treatment;
平均生根数、根长、根冠比和根粗均随光照强度的增强而增大。
With the increasing of light intension, number, length and diameter of root and root-shoot ratio were all increased.
对根冠遮光而给根尖其他部分照光时，稻根不发生负向光性反应。
If root cap was shaded when the root was irradiated, the root showed no negative phototropism 'And the root lost the characteristics of negative phototropism when root cap was divested completely.
质外体是木质部外方物质运动的一个重要途径，例如物质穿过根冠。
It is an important pathway for movement of these substances outside the xylem, for example across the root cortex.
中磷土壤中对照根体积大于磷用量最小和最大处理，根冠比也较大。
The other soil contrast root volume greater than the smallest and biggest phosphorus treatment, the root cap is bigger than too.
随品种的演进，抽穗期根重以及根冠比提高，但根系伤流液量减少。
With the improvement of rice cultivars, root dry weight and the ratio of root to shoot were increased, but the amount of root bleeding sap was reduced.
钼提高冬小麦根系的根干重、地上部干重，显著影响冬小麦的根冠比。
The other root parameters of the both cultivars were influenced by molybdenum deficiency.
结果表明：根冠比提高是马尾松对低磷胁迫的一种主动适应性反应机制；
Results showed that the increase of root_shoot ratio was an active adaptive response of P. massoniana to low phosphorus stress.
反映根冠定性关系的主要观点有，形态平衡论、环境决定论和功能均衡论。
The main viewpoints on the root shoot qualitative relations are morphological equilibrium, determining by environment and functional equilibrium.
磷高效小麦基因型的韧皮部蔗糖运输速率和根冠比低于磷低效小麦基因型；
Compared to low P efficient genotype, high P efficient genotype was lower in phloem sugar translocation rate and R/S ratio.
而高质量浓度的硒处理根系的还原活力降低、根冠比下降、根系的生物量减少。
While within the high concentration selenium, the reducing strength and the rate of calyptra of roots decreases, so does the bio-production of roots.
降雨量越大，根系越深、总根长越大、根系直径越大、侧根越多、根冠比越低。
The higher the precipitation, the greater the root depth, total root length and root diameter, the more lateral roots and the lower ratio of root to shoot.
同时，两种基因型在缺钾土壤上的根冠比和主根长仅为低钾溶液培养时的一半左右。
While, the ration of roots and shoots and the length of main root of two genotypes on deficient potassium soil were only half than that in low potassium solution culture.
干旱条件下，土壤深层根系密度、根冠比增加的顺序依次为布鲁克、英派克、苏比纳。
Under drought conditions, the order of 3 varieties in deep soil root density and the ratio increment of root to stem was ranked as follows: Brooklawn, Impact, SupraNova.
结果表明，较高的氮素水平促进根系生长，迅速提高水稻根干重，但同时降低根冠比。
The result is, high N-level can promote the root to grow, but the root cap ratio will comes down.
但根冠淀粉水解在根系的渗透调节以及在小麦适应水分胁迫中的作用还有待于进一步探讨。
However, the roles of hydrolysis of root starch in root osmotic adjustment and in drought adaptation of wheat need further studies.
低磷胁迫增大了植株的根冠比，改变了植株对营养元素的吸收及其在地上部和根系的分配。
Under low phosphorus condition, the ratio of root to shoot in all genotypes increased; uptaking and distribution of p, k, Ca, Mg, Fe, Zn between roots and shoots also changed.
研究结果表明：在同一灌水方式中土壤含水率下限小的冬小麦根冠比大，且根系总的干重也大；
Results showed that there were a big root-canopy ratio and dry weight when the lower limit of controlled soil water content decreased at the same irrigation treatment.
根冠原：在一些植物中覆盖根顶端分生组织的一层具有分生能力的细胞，根冠原可以产生和维持根冠。
Calyptogen a layer of meristematic cells covering the root apical meristem in some plants (e. g. grasses) that gives rise to and maintains the root cap.
野外应用表明，适当浓度的保水剂可以有效提高土壤保水能力和供水能力，提高苗木根冠比和成活率。
Field studies also showed that proper concentration of polymers could effectively improve water supply and moisture holding capacity, so as to improve the survival rate of seedlings.
根边缘细胞是由根冠游离并大量积累在根尖上的一群细胞，具有保护根尖免受生物和非生物的胁迫的作用。
Root border cells, previously referred as sloughed root cap cell, is a special cell population, which separates in large number from the periphery of the root cap and accumulates in the root tip.
从形态特征、根冠比、叶片解剖构造、叶片保水力、水分饱和亏等方面分析了11个树种对干旱的适应性特征。
Using morphological characteristics, root-shoot ratio, anatomical structure of leaves, leaf water holding and WSD analyzed the water holding ability of 11 tree species.
覆草旱作的根冠比(0.116)显著大于常规水稻(0.087)，前者的根系呼吸强度是常规水稻的2.7倍。
Root to shoot ratio of upland rice (0.116) was remarkably bigger than that of paddy rice (0 087). Root respiration rate of the former was 2.7 times of the latter.
覆草旱作的根冠比(0.116)显著大于常规水稻(0.087)，前者的根系呼吸强度是常规水稻的2.7倍。
Root to shoot ratio of upland rice (0.116) was remarkably bigger than that of paddy rice (0 087). Root respiration rate of the former was 2.7 times of the latter.
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