短日，读音为duǎn rì ，汉语词语，意思是冬季昼短夜长；来日不多。指年迈。
记录了矮牵牛“幻彩粉”在长日和短日分别培养的第一次开花时间和花数。
The first flowering time, and flower number of Petunia hybrida "Fantasy Pink" cultivated separately in long days and short days were recorded.
瓜尔豆是一种短日喜温作物，具有较高的经济价值。
The Guar Bean is a short daylight and warm season crop. It has higher economical value.
经春化诱导的植株，无论给予长日还是在短日条件，花器和花茎均能正常完成发育。
The vernalized plants can finish the development stages of floral organ and floral stalk, no matter long-day or short-day.
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