How to prune Jufeng grapes in summer?

How to prune Jufeng grapes in summer? Please introduce Jufeng grape in summer can refer to the following methods for pruning: first, thinning inflorescence, pinching ear tip. The thinning inflorescence of Jufeng grape should be determined according to the strength of new shoots and plant load. The average ear weight of Jufeng is about 400g, and the yield index per mu is generally 1600 kg. According to the requirements of the average panicle weight and yield per mu, if there are too many flowers and ears, the weak inflorescences in more than 2 inflorescences of one fruit branch should be thinned out within 15-25 days before flowering, and then the inflorescences on the weak fruit branches should be thinned out, so that the strong branches leave 1-2 inflorescences, the middle branches leave 1 inflorescence, the weak branches leave no inflorescence, the extended branches leave 1 inflorescence, and the preparatory branches do not leave inflorescences to make them grow healthily. The retention of pre-flowering inflorescence is about 1 beat 4 more than the expected flow, and then remove those ears with heavy falling fruit after fruit setting. Pinching the sequence tip should not be carried out about 10 days before flowering, neither too early nor too late. if carried out prematurely, the ear of the flower has not yet been extended, leaving or staying is uncertain, too late, and consumes nutrients, which is not conducive to protecting flowers and fruits. The best effect is to pinch off the total length of inflorescence 1 petal 3, and remove the accessory ear at the same time to ensure that the ear is neat, beautiful and commercial. If you want to keep the accessory spike, the accessory spike should also pinch off about 1 / 3 of its length from its tip. Second, tie up the new shoots and adjust the tree situation. The base of the new shoot of Jufeng grape is thin, and it is easy to be broken from the base by the wind, resulting in baldness and reduced yield. in order to prevent this loss and facilitate ventilation, when the new shoot grows to about 30-40 cm, it should be tied to the shelf in time. In this way: ⑴ strong shoots or long branches, sprain it from the base 1-2 nodes before flowering and then flatten it and tie it; in ⑵, the strong shoots are arched and tied with the inflorescence as the highest point, so as to weaken the apical dominance, transfer nutrients to the ear, and facilitate the differentiation of flower buds at the base, waiting for the new shoots to grow to about 45 cm or to the size of the middle and strong tips, and then arched. In this way, it not only adjusted the tree situation of that year, but also laid a good foundation for high yield in the second year. Third, the main tip picks the heart. As a result, the coring of branches is carried out from 3-5 days before flowering to the initial flowering period. if carried out prematurely, the secondary shoots will be sent out prematurely to compete with the spikes for nutrition, on the contrary, if the coring is too late, it will lead to flower and fruit drop. There are 7-9 leaves in the branches and 9-12 leaves in the developed branches. The heart-picking of the preparation branch is the same as that of the fruit-bearing branch. The heart-picking of the main lengthening branches should be carried out around August. Fourth, the treatment of the assistant tip. After the coring of new shoots, the generation of secondary shoots in the axils of new shoots is accelerated and must be dealt with in time. Generally, it needs to be treated 3-4 times during the whole growth period. The method is as follows: the accessory shoots below the ear of ⑴ are all removed from the base, that is, the accessory shoots themselves do not leave leaves; the accessory shoots in the axils of the leaves above the ear leave a leaf to pick the heart repeatedly before and after the rainy season, and 2-3 leaves are left to pick the heart repeatedly in the rainy season. All the accessory shoots below the ear of ⑵ were removed from the base without leaves, and the accessory shoots above the ear were removed from the apex with 4-5 leaves, and then 1-2 leaves were removed again and again. All the rest are removed from the stem. Either of the above two methods can be adopted. The secondary shoots of ⑶ developing branches and elongated shoots left 1-2 secondary shoots at the apex and left 1-2 leaves to pick the heart repeatedly, and the rest of the secondary shoots could be removed without leaves. The secondary shoots of ⑷ prepared shoots were the same as those of fruiting shoots. Remove the tendrils and pick the old leaves. The tendrils of grapes grow the fastest in the process of plant growth, which is the first peak. The branches are artificially tied, and the tendrils have no effect, so they should be removed at any time in combination with other work of summer management. Ventilation and light transmission is a measure to ensure good coloring of Jufeng grapes. In early August, properly remove some of the aging leaves. Click to get more grape planting techniques click to get more fruit planting techniques