根茎

Perennial rhizomatous herbs of Asia and Australia and Polynesia having ginger-scented rhizomes.

亚洲、澳大利亚和玻利尼西亚的多年生生地下茎的草本植物，根茎有生姜气味。

Leymus chinensis steppe is one of the unique types of rhizomatous steppe that appeares in middle-Asia. In recent years, plant functional groups have been became a new research focus.

羊草草原是亚洲中部草原特有的一类根茎禾草草原，对其在放牧条件下的草地的研究有助于认识典型草原的整体状况，具有普遍意义。

The nitrate content of rhizomatous vegetable is lower than 198 mg/kg, and the leaf vegetable is 500 mg/kg.

介绍环保型蔬菜专用叶面肥配方设计的研究方法，提出了20个配方进行大田小区试验，优选出的配方经在蔬菜上施用后，产量增加，蔬菜中亚硝酸盐含量低于0.001mg/kg；根茎类蔬菜中硝酸盐含量低于198 mg/kg，叶菜类蔬菜中硝酸盐含量低于50 mg/kg，达到了无公害蔬菜的要求

The stabilities of the extract from sanguisorba under different pH, light, heat, ultraviolet ray, oxidant, reducing agent and additive agents were studied. It was indicated the products could widely used in the condition of weak acid or neutral, while they were not stable to heat and light, so they should be used without light and at low temperature. The products had a strong ability to withstand ultraviolet ray. They could easily be oxidized and degraded by oxidant while they were not easily affected by reducing agent and were almost not affected by additive agents. The extract from the stem of sanguisorba was analyzed by UV and FTIR, showing that the structures of the active components were not changed during ultrasonic wave extracting.

研究了pH值、光、热、紫外线、氧化剂、还原剂以及添加剂对地榆提取物稳定性的影响，结果表明地榆提取物适合弱酸或中性条件下使用，使用范围比较广；但对光热稳定性较差，适合在避光低温的环境；具有很强的抗紫外线能力；氧化剂对地榆提取物稳定性影响较大，会加速其降解，还原剂对地榆提取物影响不大；其他添加剂对其稳定性几乎没有影响；并通过UV和FTIR光谱分析，超声波浸提没有对地榆根茎中有效成分的结构发生改变。

Objective To study the chemical constituents of Scirpus yagara.

目的对荆三棱Scirpusyagara根茎进行化学成分研究。

Belongs to the plant family of Solanaceae and grows in Andean region of South America at an altitude of 3500-4000m, it looks like radish.

的形似萝卜的根茎，原产于海拔3500～4500米的南美安第斯山区，是当地印加人重要的食物来源之一。

Fern having of a sweetish flavor .

根茎发甜的蕨类植物。

The edible starch obtained from the rhizomes or tubers of plants in the genera Canna and Tacca.

葛粉从''。'美人蕉'。''和薯属属植物的根茎或块茎中提取的可食用淀粉

Tephrosia vogelii is all treasures, not only can extract the root, stem or leaf to rotenone, but not strict on the environment, can make use of sloping land, wasteland cultivation, the roots contain rhizobia, can be free of fixed nitrogen in the air, can play to improve The role of the soil.

非洲山毛豆浑身是宝，不仅其根茎叶皆可提取到鱼藤酮，而且对环境要求不严，可利用坡地、荒地种植，其根部含有根瘤菌，可以固定空气中的游离氮，可起到改良土壤的作用。

A woodland plantof eastern North America,having fleshy rootstocks,trifoliolate leaves,and clusters of white or pinkish flowers.

三叶碎米荠一种产于北美东部的森林植物，生有肉质根茎和有三小叶的叶片，开白色或粉红色花簇

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。