1、 How

1. Sparse cutting of inflorescence: it needs to trim the inflorescence when flowering. Only 1-2 inflorescences are left in the thick fruit branches. Cut off the redundant and long thin ones, which will affect the growth of fruit grains in the later stage

2. Spraying boron fertilizer: boron fertilizer should be sprayed when pollen grains germinate. If boron deficiency will affect flower bud differentiation and pollen development. Spraying boron fertilizer solution once or twice before flowering can not only improve the fruit setting rate, but also improve the yield and quality of fruit grains

3. Water control: strictly control the water after flowering and do not water frequently, otherwise the decline of soil temperature will affect its absorption of nutrients and water, which will also reduce the fruit setting rate. Just replenish water before flowering, and do not water the soil if it is not dry after flowering

2、 How to pollinate artificially

Many varieties of grapes do not need artificial pollination. They can be pollinated by bees or wind. However, some varieties need manual help, otherwise the fruit setting rate will be very low. The male and female flower buds can be shaken during pollination, and the pollen will spread in the air after falling. Or put on gloves and touch the male bud first, and then the female bud, so that the pollen will stick to the female bud, which can help the successful pollination and improve the fruit setting rate