Winter pruning of vines is a more complex and critical technique. The quality of pruning that year can affect the growth and development of the grapes in the next year or even the next 2 to 3 years. It is very important to master the pruning technique correctly.
Pruning period The winter pruning period of the grapes cultivated in the greenhouse must be carried out after the grape plants have completely entered deep dormancy after the leaves have fallen. It is generally completed from mid-December to the end of December, which will affect its subsequent management work too late.
The pruning method determines the specific pruning method according to the different types of cultivation, the characteristics of the variety, and the strength of the tree. First cut off the pests, and branches that are too thick (the diameter of the female base is more than 1.5 cm when connected to the main branch).
â‘ Pruning of different frame types: The frame type of greenhouse viticulture generally adopts hedge frame, V-shaped frame and small frame. Fence frames were used for the first two years of fruit-hanging, and V-shaped frames were mainly used after fruit-hanging. When the hedgerow is pruning, choose the position of the parent branches to stay along with the branch buds with the pull line of the grape frame; the selection position of the mother branches of the V-shaped frame should be biased to both sides; the small trellis should be adopted because the planting distance is relatively dense. The shaping method of the rod is to directly select the resultant branch on the main vine.
â‘¡Pruning according to the characteristics of the variety: Most Eurasian species in local cultivation have the disadvantage of vigorous growth and difficulty in flower formation. The fruit quality of the green house cultivation is better than that of European and American hybrids. Such as purple crisp, early red grape, summer solstice red, etc., the pruning of this kind of varieties should be pruned with medium and long shoots, and the middle branch should leave 4 to 6 short buds. If the result is stronger, the mother branch leaves 6-8 buds and cuts the head. There are 7000 to 8000 buds per mu for adjustment when the flower ears can be distinguished after the shoots are drawn. Varieties that are easy to flower and grow in the mean, such as Ziyu, Venus Seedless, Fuji Minor, etc., carry out 2 to 3 short shoots of the fruiting mother branches, and the number of buds is about 5,000 per mu.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
Veterinary Medicine Oral Solution
Animal Liquid Drug,Vet Oral Solution Medicine,Oral Solution For Animal,Animal Oral Solution Drug
Ruicheng Lvman BioPharmaceutical Co,Ltd , https://www.rclvman.com