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.
开花前，对日长要求不严格。
Before inflorescence, the day length requirement was not strict.
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.
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.
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.
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.
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.
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