下列鲜切花中哪些不属于球根鲜切花（）。

A、小苍兰

B、唐菖蒲

C、秋水仙

D、朱顶红

相关问题推荐

• 菊花属于什么鲜切花？（）

  A、宿根鲜切花

  B、球根鲜切花

  C、水生鲜切花

  D、室内观叶植物

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• 与甲国相比，乙国发展鲜切花生产的优势自然条件是

  ①热量丰富②光照充足③地形平坦④水源丰富

  A①②B①④C②③D③④

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• 共用题干
  Keeping Cut Flowers（鲜切花）
  1. While everybody enjoys fresh cut flowers around his/her house,few people know how to keep them for as long as possible .This may be done by keeping in mind a few simple facts.
  2. An important thing to remember about cut flowers is that they are sensitive to temperature.For example,studies have shown that cut carnations（康乃馨）retain their freshness eight times lon-ger when kept at 12℃than when kept at 26℃．Keeping freshly harvested flowers at the right tem-peratures is probably the most important aspect of flower care.
  3. Flowers are not intended by nature to live very long.Their biological purpose is simply to at-tract birds or insects,such as bees,for pollination（授粉）.After that,they quickly dry up and die. The process by which flowers consume oxygen and produce carbon dioxide（二氧化碳）, called respiration（呼吸）,generates the energy the flower needs to give the flower its shape and color. The making of seeds also depends on this energy.While all living things respire,flowers have a high level of respiration.A result of all this respiration is heat,and for flowers the level of heat relative to the mass of the flower is very high.Respiration also brings about the eventual death of the flower. Thus the greater the level of respiration,the sooner the flower dies.
  4. How,then,to control the rate at which flowers die?By controlling respiration.How is respi-ration controlled?By controlling temperature .We know that respiration produces heat,but the re-verse（相反的过程）is also true. Thus by maintaining low temperatures , respiration is reduced and the cut flower will age more slowly.
  5. Another vital factor in keeping cut flowers is the quality of the water in which they are placed. Flowers find it difficult to“drink”water that is dirty or otherwise polluted.Even when water looks and smells clean,it almost certainly contains harmful substances that can endanger the flowers. To rid the water of these unwanted substances, household chlorine bleach（漂白剂）can be used in small quantities.It is recommended that 15 drops of chlorine bleach(at 4%solution)be add-ed to each litre of water. The water and solution should also be replaced each day.
  Respiration plays a key role________.
  A: by keeping its original shape and color
  B: in the life of cut flowers
  C: to produce carbon dioxide
  D: for as long as possible
  E: by controlling temperature
  F: to replace the water and solution every day

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• 目前，墨西哥已成为哥伦比亚在美国鲜切花市场的竞争对手，与哥伦比亚相比，墨西哥开拓美国鲜切花市场的优势在于（　）。

  A.运费低

  B.热量足

  C.技术高

  D.品种全

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• 与乙国相比，甲国维持其在世界鲜切花市场竞争力的优势条件是

  A.专业化、规模化生产，鲜切花价格较低

  B.土地丰富，天然花卉品种较多

  C.培植历史久，劳动力成本较低

  D.技术含量高，鲜切花质量较优

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