Grape shaping and trimming technology

Grapes are vine fruit trees, which are made up of leafy new shoots and old leaves without leaves. The old vine is the backbone of the tree, and the new shoot is the result of the grape yield. The timely shaping and trimming plays an important role in increasing the yield and maintaining the quality of the grapes. Need to pay attention to the following points:

 

The first is the site conditions of the vineyard. Different site conditions, growth and results are not the same. In the thin mountainous areas, hills or rivers and sea beaches, due to the thin soil layer, poor soil quality and low fertility, the annual growth of grapevines is generally small, the general growth is weak, and the number of branches is small. In addition to strengthening the comprehensive management of fertilizer and water, these vineyards should pay attention to less and more cuts when pruning. The amount of pruning can be appropriately biased, and the output should not be too high. The soil is thick, the soil is fertile, the terrain is flat, and the fertilizer is abundant. The annual growth of the vines is large, the branches are many, the growth is strong, and the development is robust. When pruning, the branches can be appropriately shredded, and the amount of pruning should be appropriate.

 

The second is the planting method and density. The vineyards have different site conditions, different planting and planting densities, and different pruning methods. The grapes on the scaffolding should be high in height; the grapes should be low in the fence; the cold in winter, the grapes in the cold-proof area should be laid off, which is convenient for burying the soil, and can be left without leaving the trunk; in order to obtain the early high yield of the grapes, the initial planting density Yida, the amount of branches should be more, and transplanting or thinning when the canopy is closed.

 

The third is the level of management technology. The management level is not high, the supply of fertilizer and water is insufficient, the growth of trees is not prosperous, and the number of vineyards with few branches is difficult to exert. Such vineyards, if they are pursuing high yields, lightly cutting long, and leaving more branches and ears, will further weaken the tree, causing premature aging of the trees and reducing the number of years of results; if the management level is high, the trees grow strong and the number of branches is sufficient. , the adjustment of the pruning and the effect of increasing production can be fully utilized, and the quality and yield of the year are obtained.

 

The fourth is the characteristics of the variety. The population and variety of the grapes are different, and the results of the years are different and the response to the pruning is different. Therefore, when pruning, it should be based on different populations. Variety of growth results habits, as well as different types of racking, adopt different pruning methods, not all the same, in order to obtain the desired trimming effect.

 

The fifth is the age and tree potential. The age of the grapes is different, and the growth of the branches is different: from the young to the beginning, the general growth is generally prosperous; after entering the fruiting period, the growth gradually changes from prosperous to moderate; after entering the aging period, the growth is gradually increasing. weaken. When pruning, according to this change law, the young trees and the first fruit trees should be lightly cut, and more branches should be kept to promote the long-term and early results. For the fruit-bearing trees, the pruning amount should be appropriately increased to maintain high quality and stable yield; The aging tree should be appropriately re-cut and rejuvenated.

 

Six is ​​the trimming reaction. Grapes have different populations, varieties and styles, and the response to pruning is different. Judging the pruning response can be considered from both local and global perspectives. The local reaction is based on sparse, truncated or other pruning methods to judge the localization of the branches and the formation of flower buds. The overall judgment is based on the total growth of the trees, the annual growth of the new branches, and the fullness of the branches. The degree, the quantity and quality of the ears, and the size of the fruit pieces, etc. Whether the various pruning methods are used properly, whether the size and severity of the pruning amount are appropriate, can be judged and improved by the specific reaction of various pruning methods.