Spring is the season when the grapes sprout, and the elongation, heading, and flowering of the branches and branches are increased. The strengthening of grape management in spring will increase the yield and quality of grapes.
From the middle to late March to the beginning of March, the germinating water is irrigated and the quick-effect nitrogen fertilizer is applied.
The conditional orchards at this stage should be filled with water in a timely manner to ensure budding and orderliness. At this time, it is the time when the flower buds continue to differentiate and the new shoots begin to thrive. When a large amount of nutrients is needed, the human feces and urine is mixed with 0.2% urea. The amount of fertilizer this time is about 15% of the whole year.
From March to mid-to-late April, fixed shoots, buds, spikes and disease control
After winter refurbishment, the winter buds on the mother twigs usually have 70% to 80% germination, and care should be taken to keep the buds. Too many buds remain, it is easy to waste nutrients, weak tree vigor, is not conducive to fruit setting; However, if too few buds are left, it is easy to promote the growth of strong twigs, and it is easy to severely drop flowers and fruit. Therefore, we must pay attention to wiping shoots.
Trimming buds: Usually when one bud of multiple buds germinates, one bud is left every 15 to 20 centimeters, leaving 2 to 5 new shoots for each result, and the rest are wiped from the base. When the buds are wiped off, the apical buds or weak buds in the two buds are generally wiped out, and only one shoot is left in one bud. Of course, in order to ensure the yield, it is also possible to determine whether to leave the first coil when the shoot length reaches 4 to 5 leaves, but this wastes more nutrients.
Pin tip binding vines: The preserved shoots leave 5 leaves above the flower spikes before flowering, and 8 leaves leave no flowers. After topping, a large number of axillary shoots were sprouted, leaving only 1 to 2 apical shoots on the top and leaving 2 leaves repeatedly topping. The rest of the auxiliary shoots were all erased. At the same time according to the growth of vines tied vines.
Spike processing: In order to ensure the fruit setting rate, one-fifth of the panicle spike is usually removed manually and 0.3% boron plus 0.5% urea is applied during the flowering period. Five days after flowering, artificial fruit thinning was performed on fruit trees with more fruits and then bagged.
Cultivated weeding and disease prevention and treatment: The grape starts to prevent disease when it germinates 3 to 5 leaves, spraying 600 to 800 times of fresh lipid membrane once every 7 to 10 days, especially after the rain, it must strengthen spraying protection, and pay attention to cultivating and weeding . This period is mainly to prevent grape black spot disease, gray mold, rust and so on. If germs have been used, commonly used drugs, carbendazim 800 times + 600 to 800 times the new high-fat membrane treatment.
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