1、 Introduction of florescence of different varieties

1. Xia Hei: the origin of Xia Hei grape is in Japan, which can be regarded as the offspring of Jufeng. It usually starts budding in late March and blooms in mid May. The fruit can mature about 110 days after flowering, that is, the fruit period is in late July. The fruit has strong aroma, no core, hardness and humidity, and tastes good

2. Qingti: it belongs to Eurasian species, and its origin is in California, USA. It usually blooms between April and may every year, and the fruit can mature between August and September. However, some mature earlier. They are sold in May and June and can be purchased. Most of them are cultivated in northern China, with transportation resistance, high yield and excellent quality

3. Golden finger: it is a hybrid of Europe and America. It usually begins to sprout in early April and blooms in mid and late May. By early August, the fruit can mature, which is earlier than Jufeng variety. It is regarded as a medium and early maturing variety. Its ear is large, long conical, and its pericarp is yellowish white. It has strong toughness and is not easy to crack

2、 Flowering management

No matter what kind of variety, we should pay attention to management methods during flowering. Pay more attention to temperature, humidity and nutrients. In terms of temperature, the temperature should be controlled at about 28 degrees during the day and 16-18 degrees at night, so as to better blossom. Humidity should be strictly controlled after flowering. Stop watering and keep the humidity at 50%. Nutrients should be fertilized before and after flowering, and boric acid should be sprayed during flowering, which can improve the fruit setting rate