Xiahei is a triploid variety, and the naturally growing fruit is small, so it needs to be treated with gibberellin, and the fruit grain can be increased by more than 1 times. All localities should conduct full experiments on the treatment concentration and time, and sum up a safe treatment concentration and method. Summer black ripens early and is not easy to drop fruit, which is suitable for forced cultivation in facilities. ?

Shelf selection The shelves selected vary from place to place. Hedge frames are mostly used in the north, and V-shaped or scaffolding frames are mostly used in the south. Summer black grapes can be in any frame. The author advocates hedgerow cultivation, natural sector pruning, row spacing 1.7m, plant spacing of 0.8m, and planting 500 plants in 667m2.

In the cold-proof area that needs to be covered with soil, 420 plants can be planted with a row spacing of 2m and a plant spacing of 0.8m, covering an area of 667m2. In rainy places, the distance between the 1 line above the ground and the ground is more than 80cm to prevent rain and sediment from polluting the surface of fruits.

Extended data:

Scientific winter scissors

It should be carried out after defoliation and before the bleeding period in spring, and it is appropriate to prune from late February of 65438 to 10 of 65438. Young winter scissors are cut at the junction of the arms and vines. Leave 2~3 buds on the secondary buds with a diameter of ≥0.5 cm, and cut off those with a diameter less than 0.5 cm.

For seedlings that don't grow to L silk, cut off 2~3 buds at the base and wait for 2 years. In adulthood, Wangshu should be appropriately cut long, and 5~8 full buds should be cut short on each branch. Moderate branches should be pruned again, with 4~5 robust and full buds per vine, and weak branches should be pruned again or 1~2 buds. There are 1500~ 1800 fruiting branches per mu.

Baidu Encyclopedia-Summer Black Grape