查询词典 Leersia

IR analysis of Leersia Hexandra Swart biomass revealed the presence of carboxyl, amide, hydroxyl and carbonyl groups, which are responsible for biosorption of the metal ion.

结果表明，该吸附是单分子吸附的伪二级动力学过程，吸附过程包含两个步骤： Cr离子通过静电作用富集在干粉材料表面，随后干粉表面存在的功能配位官能团会与Cr发生化学作用。

The aim was to research the absorption and resistance characteristics of Leersia hexandra Swartz growing in room on Cu.

［目的］研究室内生长条件下李氏禾对铜的吸收和抗性特征。

The structures of papilla of lemma among species in 21 Oryza and 2 Leersia were observed by scanning electron microscopy.

在细胞壁表面构筑的介观结构SiO〓具有结构的多样性，可作为植物分类的一种有用指标：用扫描电镜对稻属植物21个种和假稻属植物2个种的外稃表面乳突作了观察。

The pot experiment was carried out to study the effect of different organic acids, EDTA, citric acid, oxalic acid and malic acid, on mobilization of Cu in soil and Cu uptake by Leersia hexandra Swartz.

文章采用盆栽试验研究了EDTA、柠檬酸、草酸和酒石酸对土壤中Cu的活化和李氏禾吸收Cu的影响。

The results indicate that the tribe Oryzeae should be divided into two subtribes and that Leersia is the most closely related genus to Oryza. The present data clearly demonstrate that Porteresia coarctata should be treated as a member in Oryza rather than as a separate genus.

本研究结果支持将稻族分为两个亚族（Oryzinae和Zizaniinae）的处理，稻族中假稻属Leersia与稻属Oryza最近缘，Porteresia coarctata不应该单独成属而应处理为稻属的成员。

The results indicated that the concentration of Cu in the soil is 220.16 mgkg^(-1) contrast to the CK 500.31 mgkg^(-1) significantly decrease when the concentration of EDTA in the soil is 2 mmolkg^(-1) that explains EDTA treatment significantly decreased soluble Cu content in soil because of translating into Cu of water distill floating on the surface of soil and most accumulating around root. Contemporary, application of EDTA to the soil significantly enhanced mobilization of Cu in soil and increased Cu uptake in shoot of Leersia hexandra Swartz., the highest concentration in the leaves 336.54 mgkg^(-1) is 4 times higher compared with the ck 80.34 mgkg^(-1). However, citric acid, oxalic acid and malic acid inhibited mobilization of Cu and less significantly affected shoot Cu accumulation.

结果表明，当向土壤中施加质量摩尔浓度为2mmolkg^(-1)的EDTA时，土壤中Cu质量分数为220.16mgkg^(-1)与空白土壤中500.31mgkg^(-1)相比明显减少，说明EDTA可以极显著的降低土壤中的铜质量分数，使其转化成水提取态的Cu浮于土壤表面，并大部分聚集在根部周围，同时向土壤中施加EDTA不但促进了对Cu的活化而且显著提高了李氏禾对Cu的吸收，叶中最高质量分数达到336.54mgkg^(-1)是对照中80.34mgkg^(-1)的四倍；而柠檬酸、草酸和酒石酸则抑制了Cu的活化，但对李氏禾地上部分的Cu质量分数影响不大。

In vegetation cluster survey, Leersia hexandra Sw. are found hard to survive over 20cm of water in depth which indicated that water level is critical influence in growth and decline of aquatic plants. Different allocation in water depth and partition measures is useful in aquatic plant management.

植群调查中，李氏禾较不易生长於水深超过20公分的区位，水池之水位深度对水生植物之生长与种间消长，占有重要之影响力，规划时可利用不同水深配置搭配堆置物隔离措作为水生植物管理之用。

Recent results indicate that （1） Oryzeae is monophyletic and falls into two main clades corresponding to the traditionally recognized subtribes;（2） Close affinities of the monoecious genera are not supported, suggesting the multiple origins of unisexual florets;（3） Previous recognition of three monotypic genera （Hydrochloa, Porteresia and Prosphytochloa） is not justified;（4） Based on dating using molecular clock approach, it is estimated that Oryza and Leersia branched off from the remaining genera of Oryzeae -20 million years ago, and separated from each other -14 MYA.

目前已有的研究结果表明：稻族是单系类群，可分为两个主要分支，相当于传统的两个亚族（Zizaniinae和Oryzinae），但稻族单性花小穗是多次起源的，不宜作为划分亚族的依据；一些单型属（Hydrochloa、Porteresia和Prosphytochloa）的建立得不到分子证据的支持；根据分子钟原理估计稻族两个主要分支的分歧时间在大约2000万年前，而稻属和近缘属假稻属Leersia的分歧时间为1400万年：稻属内主要类群的分歧时间在900万年前左右。

In the 2-year field experiments, host plant preference and dispersal of the rice water weevil adults of the 1st generation emerged from the 1st cropping season rice were measured on newly transplanted plants of different species and/or growth stage. The weevil preferred significantly to barnyardgrass over Leersia herxandr and Cyperus difformis L with rice at the least, while the age of the plant did not affect such preference. But mean size of feeding scar in on younger plants were larger than in older plants.

在田间自由选择条件下，一代稻水象甲成虫对稗草的选择性显著高于对水稻的选择；稻水象甲对不同生育期的稗草、水稻的选择没有显著影响；对李氏禾和莎草的选择高于水稻，低于稗草；较幼嫩的植物上的取食斑总长度、取食斑平均长度比较老的植物的要长。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。