One must scrape the skin. On perennial grape twigs, a layer of dead skin curls up every year. It should be plucked in early spring, buried deep or burned. Second, spray lime sulfur mixture. If the bud is not germinating, spray 3-5 Baume degrees; if the bud has sprouted, then the concentration should be lower, and spray the wave 1-3 Baume degrees. When spraying, it must be meticulous and thoughtful, and it has good effects on prevention and treatment of black spot and felt disease in the early stage. The third is to eliminate the germination. The new roots of the grafted seedlings above the interface should be removed to prevent the roots of the rootstocks from dying and the plants become self-rooted, which weakens the cold resistance. The sprouting of the rootstock should be promptly cut off. Fourth, we must timely supplement fertilizer. In the case of vineyards that fail to use basal fertilisers, basal fertiliser should be supplemented as soon as the soil is thawed. The amount of fertilizer should account for 80% to 90% of the annual fertilization, and it should be dominated by rotten farmyard fertilizers. In autumn, the basal-fertilizer vineyard should be timely cultivated with manure, urea and other fertilizers. Fifth, timely irrigation and water control. Before and after germination and flowering before irrigation 2-3 times, at this time the irrigation should not be too much work, so as not to affect the rise in temperature. Control the water in time after flowering, otherwise it will lead to leggy, excessive nutrient consumption, serious pollination and fertilization, resulting in reduced production. Sixth, we must wipe out buds and pick hearts. The buds are generally divided into two stages. The first step is 10 to 15 days after germination. According to the principle of “retaining rare and leaving no secrets; leaving strong and not leaving weakâ€, 10 days later, according to the principle of “leaving the flowers without leaving blank; Do not leave the principle of "small" for the second time. When 5% of buds were found to be open, the resulting stems retained 6-8 functional leaves above the base inflorescence for topping. Nutrient topping could be determined according to the plastic and actual needs.
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