The apple blossom is the center of flower opening, and then the flowers are open one after another. Pollination fruit setting rate was the highest on the day of flower opening. Pollination could not be established after 4 days of opening. Usually, the first batch of pollination and fruit setting rate is high, the second batch of flower pollination and fruit setting rate is medium, and the third batch of flower pollination and fruit setting rate is low. Therefore, the apple pollination time is from the day before flowering to the third day after flowering, and the pollination effect is the best when the single flower is opened. It is advisable to conduct artificial pollination on a sunny day from 9 am to 4 pm on a sunny day. Pear blossoms usually open at 8 a.m., and the flowers can be pollinated on the day of opening. Pollination is best for pollination for 1 to 2 days. The pollination rate on the third day is very low. The best time to pollinate in a day is from 8 a.m. to 2 p.m. The clearer the weather, the better the pollination effect. During pollination, the color of the anther can be used to identify the opening time of flowers: the flowers that are open on the day are anthers that are pink, the flowers that are on the second day, some anthers are dark brown, and on the third day all the anthers are dark brown . Green Salt,White Quartz,Dragon Tooth,Purple Quartz Henan Qiancuntang medicial technology co.ltd. , https://www.qctchineseherb.com