查询词典 tap root

Unfortunately, accurately quantifying below-ground C fluxes and estimating fine root longevity are still elusive. One of reasons is because we do not know the proportions of shortlived vs. long-lived root pools or the distribution of fine root longevity within these pools.

但是，准确量化地下C通量以及估计细根寿命仍然是目前研究中的难点，其原因之一是因为我们无法确定不同寿命细根间的数量比例关系，抑或说不清楚细根寿命符合何种统计分布。

Ferula sprouts the middle ten days of march per year in the north of xinjiang, its young plant in the first ten days of may, leave the inflated flesh tap root to live for freeze-up and hot summer days.

北疆地区野生阿魏每年3 月中旬萌芽， 5月上旬开始回苗，留下膨大的肉质根以度严寒酷暑。

Na accumulative content of the NongDaTianYan4 and KWS0143 were higher than that of the BaoYu302 and PRESTIBEL, the accumulative content in phyllome was higher than that in tap root.

其中叶丛最高为5.8％，块根中最高为1.2％；品种间最明显的差异是国外品种块根中钠素含量高于国内品种。

The chloroform phase was isolated into 7 phases by column chromatograpathy, and the bioassy showed that the 1 phase has strong inhibitory effect, was 91.01% on Abutilon theophrasti M., root length, 51.35%、63.93%on Echinochloa crusgalli L, seedling length and root length, and the Amaranthus retroflexux L.,germination rate is 0, the secondly was 2 phase and 5 phas, and next we continued iaolated these two phases.

用硅胶柱对氯仿组分进行分离得到7个组分，生物测定表明组分1化感作用最强，对苘麻根长抑制率为91.01%，对稗草芽长和根长的抑制率分别为51.35%、63.93%，反枝苋的发芽率为0；其次是组分2和组分5，由于组分2的含量相对较少，对组分1和组分5继续分离。

It,s allelchemicals were isolated through extraction, thin-layer chromatography, and column chromatograpathy. After the white clover was infused in ethanol and evaporation, the leavings was dissolved by water. The aqueous extract was extracted by petroleum,chloroform, ethyl acetate and n-Butanol successively, and the bioassay showed that the chloroform phase has obvious inhibitory effect, the inhibitory rate was 44.32%,88.08% on Abutilon theophrasti M., seedling length and root length, 82.08%,92.16% on Echinochloa crusgalli L., seedling length and root length, and the Amaranthus retroflexux L., germination rate is 0, the secondly was ethyl acetate phase.

运用萃取、薄层层析、柱层析等方法对白三叶草地上部分的化感物质进行初步分离，结果表明，白三叶草经乙醇浸提旋转蒸发后用蒸馏水溶解，依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取，生物测定表明氯仿组分对杂草的抑制作用最强，对苘麻芽长和根长抑制率分别为44.32%、88.08%，对稗草芽长和根长的抑制率分别为82.08%、92.16%，反枝苋的发芽率为0；其次是乙酸乙酯相。

The study of adventitious root formation is for the understanding andcontrolling of root development and vegetative propagation.

有关不定根形成机理的研究，是了解和控制根的发育和营养繁殖的基础性工作。

Wetland plants have a series of physiological and anatomical characteristics to adapt flooding habitat, e.g., their root aerenchyma and oxygen-penetrating capability can make the rhizospheric micro-environment be under oxidation condition, resulting in the formation of Fe/Mn plaques on root surface.

湿地植物具有一系列生理和结构上适应浸水环境的特征，如根系的通气组织和渗氧能力，这使得植物根际微环境处于氧化状态，这样土壤中的铁和锰会在植物根表被氧化而形成红棕色的铁锰氧化物胶膜。

32P isotope tracing technique was used in this study,and the results indicated that phosphorus stored or pre-existed in roots would be remobilized in maize under phosphorus deficiency from root cortical cells with lysis to shoot mostly rather than root apex during aerenchyma formation.

Kraus等的试验表明玉米根系从土壤中吸收的32P可在根皮层内保留15 d，之后逐渐减少[2]。这意味着与叶片的情形相似，根内也进行着磷的活化和再运转。当植物处于磷胁迫下时，根系吸收的磷素远不能满足植物各器官生长发

Part III the root bark of Ailanthus altissima Plant characteristic and pharmacological activity of Ailanthus, Ailanthus altissima and the root bark of Ailanthus altissima are introduced.

第三部分樗白皮介绍了臭椿属Ailanthus、臭椿Ailanthus altissima及樗白皮the root bark of Ailanthus altissima的植物特征及药用性能。

Among her serial works named Hero,one depicts like this:on a desolate ground only with root remained,a plane which was supposed to enter into the air lane stayed on a root,a self-assured young pioneer with a hat receiving alien messages holds a spade but could not find a green land to irrigate,only leaving the red scarf fluttering…..

在她的命名为hero的系列作品里边，有一件作品是这样的：在一片只剩下树根的荒漠的土地上，一架本该进入航道的飞机却在某个树根上搁浅，一位踌躇满志头戴"接收外星人信号"帽子的"少先队员"拿住一把铁锹却找不到可以灌溉的绿地。

These are places without aristocratic baggage; egalitarian places open to talent, self-improving, engaged in learning and innovation through networks that were at once competitive and cooperative.

这些地方没有贵族遗风作祟，而且对于那些有天分的人是开放的平等之地，这些人善于通过那些曾经很具有竞争力与合作精神的关系网进行自我提高以及学习创新。

Christine: You don't want to see me?

你不想见我？