The purpose of 2 ~ 3 bud pruning is to prune newly planted young trees, and 3~5 bud pruning is due to the lack of plant parts. In order to occupy enough space, increase the number of branches and leaves and trim them slightly.
On the basis of pruning last year, two branches were pruned with 1~2 buds respectively. However, the regeneration of double branches needs to be carried out when the main vine has space, otherwise, the shelf surface will be closed, invalid leaves will increase and nutrients will be consumed. Cut off an original branch, keep a branch, and then cut off the retained branch, that is, single branch renewal.
Extended data:
Grape inflorescence pruning is divided into two steps: the first time is after the inflorescence is exposed, and at this time, according to the load of the plant, too many or too weak inflorescences are thinned in time; The second time was when the inflorescence unfolded but not yet blossomed. The main work this time is to cut off the secondary spike on the inflorescence and the spikelet at the front of the inflorescence of 1/4.
When pruning inflorescences of Fengfeng series varieties, it is necessary to remove not only the secondary spike and spike tip, but also 3-4 spikelets below the secondary spike, so that only the middle and lower 10- 14 spikelets are left on the whole spike. Combined with gibberellin treatment, Kyoho's fruit grains are larger and its ears are more compact and beautiful.
In addition to pruning inflorescences, fresh food species should also carry out ear finishing, and the ear finishing time should be carried out after the physiological fruit drop is basically stable. After completing the ear, the ear is compact and the fruit grains are neat.