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Grape management after harvesting should be tightened
After the grapes are harvested, the phenomenon of tree weakness will generally appear. Therefore, strengthening post-harvest management plays an important role in the overwintering of grape plants and the growth of new branches in the following year, and can lay a good foundation for the grape harvest in the coming year. Pruning and clearing gardens continue to do a good job of topping and snoring on the basis of summer cuts, removing tendrils and thin and weak branches, and removing leaves with severe disease, so as to reduce nutrient consumption, regulate the flow of nutrients in the tree, and promote the full maturity of buds. Weeds are removed from the garden, and the cuts, diseased leaves, diseased fruits, dead branches, and sundries that have been cut off are collected and brought out of the park to be buried or burned to reduce the sources of diseases and insects. After applying good fruit, the fertilizer is applied to about 15 kilograms of available nitrogen fertilizer per acre orchard after the fruit is harvested, and 0.3% urea solution may be added for extra-root dressing 2 or 3 times to promote the normal growth of the tree. If the tree vigorously grows, then it will be used sparingly to prevent new shoots from stretching out and consume a lot of nutrients. Basal fertilizers should be re-used before the deciduous leaves of grapes, which are usually completed from late September to early November. Nitrogen, phosphorus and potassium are the main fertilization methods. Each hole is applied with 15 kg of decomposed manure and 0.4 kg of sulfur-containing compound fertilizer, which is then covered with fine soil. Loose soil protection against drought and deep-cultivated loose soil should be carried out from September to October, when the severed root system can heal quickly. Deep plowing at the base of the fruit tree is about 18 cm. When deep plowing, it can be combined with fertilization. When there is a lot of rain, it is necessary to clear the gutters in time. In case of autumn or winter drought, irrigation should be carried out in time to maintain the moisture content in the field not less than 60%, so as to facilitate the soil moisture. Prevention and treatment of diseases and insect pests The main diseases of grapes are downy mildew, black pox, rust, etc. After the fruit is harvested, 180 times Bordeaux mixture can be used to spray fruit trees. In the presence of lesions, they were sprayed with 700 times of WP or 75% of chlorothalonil 500 to 800 times, and 5% of rifazone could also be used as 3000 times to simultaneously treat pests such as leafhoppers.