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紫果西番莲具有一年多次开花结果的习性,主要靠春梢结果。福建中部地区开花期在4月上旬至5月中旬,一朵花开放的时间为1～2天。花蕾大部分着生于结果蔓的中部或中上部,自然座果率为23.5%,但在盛花期进行人工授粉可使座果率提高到36.5%。开花后15天果实已增大到接近最大程度,18天后一般不再增大,而集中于种子的发育和可食部分假种皮的形成,果实从受精至完熟历时89～91天。本文还阐述了影响开花座果的有关因子,并提出了重施花前肥、适当修剪和花期放蜂等提高座果率的有效措施。
Pomegranate passionflower has the habit of flowering many times a year, mainly by spring shoot results. Flowering in central Fujian in early April to mid-May, a flower open time of 1 to 2 days. Most buds were born in the middle or upper part of the fruit, the natural fruit rate was 23.5%, but artificial pollination in full flowering stage can improve the fruit rate to 36.5%. 15 days after flowering the fruit has increased to near maximum, generally no longer increases after 18 days, but focuses on the development of seeds and the formation of edible part of the aril. The fruit is aged from fertilization till maturity 89-91 days. The paper also describes the factors that affect flowering and fruiting, and puts forward some effective measures such as reusing pre-flowering, appropriate pruning and flowering to increase fruit set rate.