开花前，对日长要求不严格。
Before inflorescence, the day length requirement was not strict.
开花前 ，两极核融合成次生核 ，或不融合仍保留极核状态。
Two polar nucleis fuse into the secondary nucleus, or they dontt fuse before the anther shed.
试验研究了开花前不同光照处理对大豆开花后的发育、产量形成和品质性状的影响。
The effects of pre- flowering photoperiodic treatments on the post-flowering-development, yield formation and chemical quality of soybeans were studied.
本文介绍了小麦开花前和开花后穗培养的方法，并对穗培养方法在花，粒发育生理研究中的应用进行了综合评述。
This paper introduced the spike culture system of wheat and reviewed its application to physiological research of floret and grain development in wheat.
有一种办法就是在每年园艺季节开始前种苜蓿或三叶草，并在它们开花前，把其埋入土里用作“农家肥”来给土壤增加营养。
One way is to plant alfalfa grass or clover prior to each garden season. Then turn these plants into the ground before blooming to use as 'green manure' for healthier soil.
在大约3.6亿年前，野生胡萝卜也许是和其它开花植物一起进化的。
Wild carrots probably evolved with the other flowering plants about 360 million years ago.
这对夫妻的雇主“帝王永存”说，他们在一周前就被炒鱿鱼了，并且关于鲁珀说他上司让他“把他的脑袋打开花”，他们提出了质疑。
The couple's employers, Kaiser Permanente, said that they had been fired a week ago and disputed Lupoe's account of an administrator telling him to "blow his brains out".
今天你把它种在土里（你也可以在六月前从贮藏室拿出来种下），过上那么100天它就开花。
If you get it in the ground today (although you could plant from storage until June) it will flower in about 100 days.
白垩纪中期之前，也就是说大约1亿年前，开花植物很少见：裸子植物占据着地球的景观。
Before the mid-Cretaceous, 100 million years ago or so, flowering plants were scarce: conifers and their relations ruled the landscape.
回溯到开花植物初现的1.3亿年前，苍蝇和甲虫堪称最初的传粉者。
Flies and beetles are the original pollinators, going back to when flowering plants first appeared 130 million years ago.
尽管他们属于耐寒植物，但他们通常在危险的晚霜结束前开花，结果霜冻会使花死掉，导致减产。
Despite being frost-tolerant, they usually flower before the risk of a late frost is over and the flowers can die, reducing crops.
不知道为了什么，你总比沙漠更沉默，夜漫长，梦太多，床前明月也寂寞，等一场花开花落。
Does not know for anything, you always silence compared to the desert, night of long, the dream are too many, before the bed, the bright moonlight is also lonely, and so on a flower blossoms falls.
春天开花的块茎有一个共性，种植它们要赶在地面出现霜冻前三到四个星期的时候。
Spring flowering bulbs have in common that they need to be planted some 3 ~ 4 weeks before the frost is in the ground.
最近最古老的开花主物的证据来自于中国的1.25亿年前的化石。
Currently the oldest evidence a flowering plant is a 125-million-year-old fossil from China.
最近最古老的开花主物的证据来自于中国的1.25亿年前的化石。
Currently the oldest evidence a flowering plant is a 125-million-year-old fossil from China.
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