难检字字典在线查询

汉语拼音：shòu fěn

花粉从雄蕊花药传到雌蕊柱头上的过程。分天然授粉和人工授粉。

• These plants are then pollinated and allowed to mature and produce seed.

  然后，这些植物就被授粉，从而成熟结籽。

• The flowers are pollinated by insects.

  这些花通过昆虫授粉.

• Certain varieties cannot be fertilised with their own pollen.

  某些物种只能异花授粉。

• The flowers get pollination by insects.

  这些花通过昆虫授粉。

• Many of the indigenous insects are needed to pollinate the local plants.

  需要很多种土生昆虫给当地植物授粉。

• Early archegonial development is already evident two weeks after pollination.

  颈卵器的早期发育在授粉后两周内就业已明显.

• It is important to match varieties in order that they may cross - fertilize.

  要配置的授粉品种必须是能互相授粉的.

• The relationship between plant and pollinator is a mutualistic one.

  植物和授粉动物之间的关系是典生关系.

• Use of controlled pollination is generally confined to various types of research.

  控制授粉的应用,一般只限于干不同的研究工作.

• Supplemental mass - pollination can substantially increase the seed yields in many cases.

  在许多情况中,辅助混合授粉实际上可以提高种子产量.

• Many insects were pollinators before other flying animals were extant.

  在其它能飞的动物出现之前,许多昆虫已经是授粉者了.

• He could effect cross - fertilization between them.

  他可以实现它们间的杂交授粉.

• This eliminates the possibility of self - pollination.

  这减少出现自花授粉的可能性.

• They were maintained by normal self - pollination.

  它们保持正常的自花授粉繁殖.

• Only a few forest tree species can develop viable seed from unpollinated ovules.

  只有少数林木可以从未授粉的胚珠发育成有活力的种子.