Excuse me, you have a lot of grapes to bear, and pruning is the key. How to cut it?

Previous topic: If you want to bear more grapes, pruning is the key. How and when to cut them? I think the topic is a bit big, so let's talk about the topic of grape pruning in winter. Master Zhang has a grape plantation in his hometown. There are several common grape varieties in it. Every winter, he goes to cut grapes. Naturally, he has seen him cut grapes in winter. Just say winter cutting.

What is the winter pruning time of grapes?

Generally speaking, grapes should be pruned in winter at a reasonable time: it is no problem to prune in winter within one month before the bleeding period after the vines enter the dormant period. In our hometown, we usually harvest after the winter solstice and before May 9th.

Why do you arrange the winter cutting time like this? We should mainly consider the vine, which has a period of nutrient reflux. After the leaves fall in autumn and winter, their nutrients will flow back from the treetops to the trunk, branches and roots of grapes, and the return will be completed in winter to the future. But don't be too late After May 9, when the weather gets warmer, the nutrients in the roots and trunks of the vines start to move to the top again, which will cause bleeding and make a lot of nutrients in the vines lose. It can be seen that the timing of pruning vines in winter is very important, but we can't stick to the rules and prune them according to different trees in winter.

What is the principle of vine pruning in winter?

It is mainly the operation of three cuts and one release, which is basically the operation of fruit farmers everywhere. Which three cuts? Including short cutting, thinning and shrinking of grape branches. Don't cut the vines too early in winter, or they will be cut before the winter is over, and the vines will become weak in the coming year. Here I divide vines into weak trees, medium trees and strong trees, which are easy for fruit farmers to understand.

Our winter cutting principle is to cut weak trees again, medium trees lightly and strong trees lightly. This really needs pruning in winter according to the strength of the vines in the vineyard. It is very helpful to water the vines in time after pruning.

Winter pruning of vine mother branches?

Short pruning of vines in winter can make the fruiting mother branches thicker and stronger, cultivate grape branches, rejuvenate the trees, and is very helpful for flower bud differentiation. How to distinguish the fruiting mother branches of vines? Those shiny branches and mature vines. Generally, there are short buds, full eyes and developed xylem in internodes. It is different from the long branches, competitive branches, pest branches and so on of vines.

Too dense branches in the tree are loosened in winter, which is very helpful for the light transmission and ventilation of lianas. Thinning is a common branch thinning. By thinning too many vines and competing branches, more new treetops can be prevented from sprouting in the coming year, and the nutrient consumption of vines can be reduced.

There is also a shrinkage shear, which is also an important winter shear. The mother branches and diseased branches of perennial vines with severe aging should be cut off during dormancy, which is very helpful for later renewal and rejuvenation. In short, in some places, such as places where water and fertilizer are insufficient and the soil is prone to drought, short branches should be pruned and weak branches should be pruned appropriately. Under the same conditions, thick and nutritious vine mother branches should keep long branches properly.

For annual grape branches, we don't cut them in winter, let them grow freely, that is, cut them in three times and put them in one place. Cutting them in winter is also beneficial. Mainly used for oblique branches and middle branches of lifelong vines, not suitable for weak young grapes.