Grape pruning is to make grapes not consume so much unnecessary nutrition during hibernation, and to preserve nutrition to lay the foundation for the growth and development of grapes in the coming year.

1, germination period

Water the grapes before they sprout. In areas with little rain in spring, irrigation is needed once to meet the needs of grape germination and branching.

2. Before and after flowering

Water before and after flowering every 10 day. Before flowering, combined with the application of flower-promoting fertilizer, it is suggested to use Ribelli bird's nest water-soluble fertilizer, which can be absorbed quickly by the root system, promote the rapid growth of inflorescence, ovary and pollen, and has obvious effect on improving the pollination and seed setting rate.

3. Berry period

When berries grow to the size of soybeans, new buds also grow vigorously. At this time, the temperature rises, the water evaporation of leaves increases, and nutrients and water are urgently needed. Therefore, it is necessary to apply fruit-promoting fertilizer and irrigate fruit-promoting water phase in late June. When there is little rain at this stage, water every 7-8 days to meet the needs of new shoots and berries.

4, berry expansion period

In the berry period before ear ripening, the combination of irrigation and fertilization before ear ripening can supplement the water shortage in the later stage of grape growth, improve the yield and quality of grapes and promote ear ripening.

5. Late harvest

After fruit is harvested, it should be watered twice before cold protection, so as to improve soil moisture, promote root growth and development, moisten branches and leaves and prevent drainage. In arid areas, it is necessary to dry in the sun for 2 ~ 3 days after wintering with frozen water, and then bury it for cold protection after the surface soil is dry, so as to prevent the soil moisture from being too high and causing the buds and leaves to rot.