biennial plants中文什么意思

二年生植物

• biennial:    adj. 1.二年一次的；持续两年的 ...
• plant:    n. 1.植物，草木 (opp. a ...
• plants:    花草; 墨绿; 植物

例句与用法

1. South african annual or biennial plants having flowers that open only in bright sunlight
   南非一个一年或二年生植物属，其花只在明亮阳光下开放。
2. Bolting premature flowering and seed production . biennial plants will sometimes bolt in their first year ; this seriously reduces their yield
   抽苔：提前开花或产生种子。两年生的植物有时会在第一年抽苔，这会导致产量严重下降。
3. In addition , the pith of root and stem is flourishing for prosperous growth period and declining period , the vascular tissue storing the nutrient and providing the nourishment for the biennial plant in next year from abnormal secondary growth is developing in pith , unusual structure eg . epidermis and vice - epidermis , bubble form cell , short pipe numerators and wreath grid types leaf etc . in each organ of pugionium comutum ( l . ) gaertn . had been formed to adapt to dry environment , so the characteristics on appearance and anatomies in pugionium cornutum ( l ) gaertn . has closely of relation with its anti - drought and its adapting to desert environment
   此外，叶片旺盛生长期、衰退期根茎具发达的髓，髓内有异常次生生长形成的维管组织，贮藏养分，为沙芥次年形成二年生植株提供营养，沙芥各器官在解剖结构方面都形成了特化结构如具表皮及副表皮、泡状细胞、短的导管分子及环栅型叶等以适应干旱的环境，因此沙芥各器官的形态及解剖特点与其抗旱、适应沙漠环境有密切的关系。