photoperiod

[昆][植] 光周期英释中释nthe period of daylight in every 24 hours, esp in relation to its effects on plants and animals

1 Day-length sensing is an important biological function in plants and photoperiod is one of the key ambient factor determining the time of plant flowering..日长感知是植物所具有的重要的生物学功能，光周期是决定植物开花时间的关键环境因子之一。

2 This research suggests to increase flower produce in months flower production is not enough by controling flowering period by photoperiod , light intensity or growth temperature..本研究拟以光周期、光照强度或生产温度对水仙百合做花期调控，期使其生产不足之月份产量增加；