It is very important to improve the yield and quality of grapes and to manage them well in spring.

The sprouting and leaf spreading, branch elongation, heading, flowering and fruiting of grapes are all in spring, so the management of grape in spring is the key to improve the yield and quality of grape in that year. Today, the editor will introduce to you the main points of grape spring management.

Grape

1. Application of quick-acting nitrogen fertilizer in irrigation and budding water

During the sprouting period of grapes, the whole grape garden should be watered in time to ensure that the sprouts are neat. In addition, grapes during the period when flower buds continue to differentiate and new shoots begin to grow vigorously require a lot of nutrients, so the grapes should be mixed with 0.2% urea in mature human feces and urine. The amount of fertilizer applied this time accounts for about 15% of the amount applied in the whole year.

Second, wiping buds and fixing shoots

After winter pruning, the winter buds on the grape fruiting branches usually germinate 70% or 80% from March to mid-late April, so attention should be paid to the number of buds left at this time. Leave too many buds, easy to waste nutrients, make the tree weak, not conducive to fruit setting; but if there are too few buds, too much nutrients are easy to promote the vigorous growth of grape branches and vines, resulting in serious flower and fruit drop, so we should pay attention to the sprouting and shoots of grapes.

Wipe buds, usually when there are multiple buds on a grape fruiting mother branch, leave one bud every 15 to 20 centimeters, leave 2 or 5 new shoots per fruiting mother branch, and the rest of the buds and shoots are erased from the base. When wiping buds, the non-flowering spike buds or weak buds in the double buds are generally erased, and one bud eye is suitable for leaving a new shoot. Of course, in order to ensure the yield, we can also decide whether or not to erase the first roll of silk on the new shoot when it grows to 4 or 5 leaves, but the disadvantage of doing so is that it will waste more nutrients.

Third, fix the ends and tie the vines. Before the retained grape shoots blossom, the flowering shoots leave 5 leaves on the flower spike to pick the heart, while the unflowered grape tips leave 8 leaves to pick the heart. After picking the heart, it will sprout a large number of secondary shoots, leaving only 1 or 2 secondary shoots at the top and 2 leaves to remove the rest of the secondary shoots. At the same time, tie the vine at the right time according to the growth of the vine.

IV. Prevention and control of diseases and insect pests in flower panicle treatment

The treatment of flower and fruit ear. In order to ensure the fruit setting rate, the 1P5 of the spike tip is usually removed manually, and 0.3% boron fertilizer and 0.5% urea are sprayed at flowering stage. Five days after flowering, the grape ears with more fruit were thinned artificially, and then bagged.

Fifth, grape ploughing weeding and disease control. Grape sprouting 3-5 leaves began to prevent the disease, spraying once every 7-10 days, especially after rain should pay more attention to ploughing and weeding, and strengthen spray protection. This period is mainly to prevent grape gray mold, black pox, rust and so on.