Before organizing the grape vines and changing them to the grape flow period in early April, the fixed grape vines should be sorted out and the old vineyards and inferior cultivars should be changed.
Grasp the unearthed soil when the grape root layer soil temperature stabilized at about 6 °C ~ 8 °C, the roots began to move, sap gradually flow, the grapes can be unearthed. It can also be unearthed when local apricot blossoms are open. Unearthed prematurely, the roots have not yet been active, the shoots are easily drained, and the phenophase of the grapes that have been unearthed is delayed or yellow buds appear after germination. Notes for unearthed soil: 1 Unearthed in batches, remove the cold-preserved soil on the south or east side of the grape burial ground to reduce the humidity of the soil around the grape vines. After 2 to 3 days, remove the other half of the cold-proof soil. 2 Avoid damage as much as possible. Inflated buds, especially buds that have germinated; 3 Try to avoid damaging the branches and causing injury.
The supplemental basal fertilizer was not timely applied to the basal fertilizer or the basal-fertilizer insufficiency in autumn last autumn, and could be used after the soil was thawed. The basal fertilizer is dominated by farmyard fertilizers, and nitrogen, phosphorus and potash fertilizers are properly formulated. Generally, Mushi fully cooked organic fertilizer 5 cubic meters, superphosphate 100 kg, and potassium sulfate 50 kg. Fertilize the distance from the base of the main stem to 50 cm, depth and width of each 40 cm. When the base fertilizer enters the ditch, mix with the soil, and then cover the soil with water.
In addition to the pruning of the shoots after winter, the winter buds on the mother shoots usually have 70% to 80% germination, and attention should be paid to leaving the buds. Usually when one bud of multiple buds germinates, one bud is left every 15 to 20 centimeters, leaving 2 to 5 new shoots per mother tree and the rest removed from the base. When the buds are wiped, the apical buds or weak buds in the two buds are generally erased, and only 1 shoot is left in one bud. And promptly promote the use of Kao Wang No. 3, the transformation of plant vegetative growth into reproductive growth, inhibition of the main tip of crazy growth, and promote flower bud differentiation, more flowering, improve pollen fertilization quality, more flowering, more fruit set, prevent fruit drop, promote development.
Before the flowering of the tip of the tip of the vine, the leaves remain above the spike to leave 5 leaves topping, while the tip of the flower leaves 8 leaves topping. After topping, a large number of secondary shoots will be sprouted, leaving only the top 1 or 2 secondary shoots and leaving 2 leaves repeatedly topping, and the rest of the secondary shoots will be wiped out. At the same time, it is necessary to tie the vines according to the growth of vines.
Treatment of Flowering Ears To ensure fruit setting rate, one-fifth of the panicle spikes are usually removed manually and 0.3% boron plus 0.5% urea is sprayed during the flowering period. Five days after flowering, artificial fruit thinning was performed on the ear with more results, and then spray-free.
Cultivated weeding and disease prevention Grapes begin to prevent disease when they germinate from 3 to 5 leaves. New high-fat lipid membranes are sprayed every 7 to 10 days. Especially after the rain, spray protection is strengthened, and cultivating and weeding are emphasized. This period is mainly to prevent grape black spot disease, gray mold, rust and so on. For example, black pox can be used 8000 times Dupont Fuxing, gray mold can be controlled by 1500 times faster Crohn. In addition, 800 times more carbendazim, 800 times mancozebite, 800 times more than the Sensen zinc control.
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