Leave 10 ~ 12 leaves for vegetative branches, and the extended branches can be longer (the new branches that grow from the winter buds of the fruiting mother branches are called new shoots, among which the new branches with fruit ears are called fruiting branches, and the new branches without fruit ears are called developmental branches or vegetative branches).
The stronger the pinching, the better the fruit setting, but strong pinching will cause insufficient leaf area, stimulate the rapid growth of new shoots, which is unfavorable to the growth and development of plants. Therefore, for varieties or new shoots with strong growth potential, only the soft tips of unexpanded leaves at the top of new shoots can be pinched off.
After the grapes were spiked, due to the vegetative retraction, the secondary branches began to grow rapidly, and as a result, all the secondary branches below the branches were smoothed. The secondary branches above inflorescence and vegetative branches can have 65,438+0 leaves, and the secondary branches at the top of new branches can have 65,438+0 ~ 2 leaves, 3 ~ 4 leaves or 7 ~ 65,438+00 leaves.
Extended data:
The main function of enucleation is to temporarily inhibit the growth of new shoots, alleviate the nutritional competition between new shoots and flower spikes, and promote the development and reproductive growth of ovaries. Core-picking not only enhances the nutritional metabolism in flowers.
Tie the vines and remove the tendrils. When the new tip is about 40 cm long, it should be tied to the frame surface in time to facilitate ventilation and light transmission and avoid being blown off by the wind. General horizontal binding can alleviate the polarity of growth and control the excessive growth of new shoots, which is used for general fruiting branches and developing branches;
Vertical binding can promote growth and is suitable for treating extended branches and weak branches. The vines are tied in the shape of "oo" to prevent the branches from being scratched or worn off on the wire. Combined with scissors in summer, tendrils can be cut off at any time.
References:
Baidu encyclopedia-grapes