What are the characteristics of flowering and pollination in jujube trees?

The jujube flower is small and is a typical insect-pollinated flower, and most varieties are capable of self-fruitfulness. Jujube flowers open from the bottom upward, and within the same inflorescence, the central flower opens first, followed by the lateral flowers. A single jujube flower completes its opening within one day, and pollination can last up to 2 days. The optimum temperature for jujube pollination is 24 to 26 degrees, and the ideal air humidity is 80%. High temperatures (above 38 degrees), low temperatures (below 20 degrees), and excessively dry air are all unfavorable for pollination and fertilization.