Grape Pinching Technology
Today's focus is to introduce you to the related experience of grape pinching technology in flower planting. The specific content is as follows:
Grape Pinching Technology
In order to improve the grape handling level in grape production, it is necessary to do a good job of pinching. Pinching the top, also known as topping, is an important part of grape management technology. It can reduce the normal nutrient consumption of the rapid growth of new shoots, concentrate nutrients, increase the fruit-setting rate, and improve yield. So how to pinch grapes? Let's find out.
Pinching Seedlings
For young weak plants planted in the current year, it is generally done when the seedlings grow to 30-40 centimeters. The new shoots are pinched off, and the secondary branches of the base 2-3 nodes are rubbed off. Only one secondary branch and 4-5 leaves are left. After topping, multiple eggs should be laid according to the growth of the lateral branches to promote the growth of stems and leaves. When the seedling height reaches 1 meter, it is a strong seedling planted in the current year. The secondary branches below 30cm from the base are rubbed off, and 1-2 leaves are repeatedly pinched on the secondary branches during work. When the top secondary branch grows to 1.5 meters, a second pinching is carried out. After repeated pinching, the top growth is inhibited, and the secondary branches on both sides continue to thicken.
Pinching Fruit Branches
Fruit branches are generally pinched 3-5 days before flowering, and should not exceed the initial flowering stage at the latest. When grapes bloom, the flower buds gradually change from green to dark green. At this time, the flower buds are completely separated on the inflorescence, which is the best time for pinching. For varieties with severe flower and fruit drop, the flowers should be pinched 10-12 days before flowering. Generally, 6-8 branches above the ear should be pinched. It can also control the nutrient consumption at the top of the branches and vines. The nutrients of the chicken embryo can be used for the inflorescence, laying the foundation for the later expansion of the fruit.
Pinching Nutrient Branches
Different from fruit branches, the topping of nutrient branches is usually done on 8-10 leaves. If the plant surface area is large, it can be postponed to 16-18 leaves. This can increase the leaf area, improve the shading effect, and avoid sunburn and disease phenomena of the fruit. In addition, combined with methods such as ring stripping, the tree vitality can be weakened, avoiding the invalid consumption of plant nutrients, and the branches and vines can mature as soon as possible. If the nutrient branches grow too fast, the method of pinching fruit branches can also be used. The first pinching should be done when the leaves are 6-8, and the second pinching should be done when the top lateral branches grow 4-6 leaves.
Pinching Long Branches
In order to make the extending branches fully mature, after topping, the secondary branches of the summer buds should be retained, and topped with 6-8 leaves. For some weak branches, the lower branches should be replaced with harder branches and topped at 10 leaves to promote the thickening of the branches; for medium branches, the pinching should be completed before the end of September to make the branches mature; if the branches are vigorous, the pinching should be done earlier to avoid nutrient dispersion and excessive growth.
The above is an introduction to the grape topping technology, hoping it can be helpful to you.
The detailed explanation of the grape pinching technology shared above is for everyone's reference only!