Grapes before and after picking

Pre-harvest management first trims the ear. Cut off the low-sweetness, easily-dehydrated grains and granules in the bottom 1/4 to 1/3 of the ear, and remove the damaged grains and granules. In order to improve the sugar content and storage stability of grapes, phosphorus and potassium fertilizers are mainly used in the first month before harvest. When the fruit starts to be stained, it is sprayed once every 10 to 15 days with 800 times solution of Teflon, 600 to 800 times of carbendazim, or 800 to 1000 times of Seoxe. In order to improve the quality and storability, stop watering within 15 days before harvesting, and remove the rainwater in time. In order to prevent the falling of the grain during the storage and the stem drying shrinkage, the spray rate is 15 to 45 days before harvesting, and the fresh green pigment is sprayed 15 days before the harvest or the penicillin and penicillin are sprayed 3 days before the harvest. Select harvests in the morning or evening when the weather is fine and the temperature is low. Rainy or foggy days are not suitable for harvesting. When harvesting, the ears are trimmed with scissors, and then the inflorescences are laid flat in boxes or baskets lined with 3 to 4 layers of paper. The container should be shallow and small, and the paper should be pre-cooled after filling the ears. Post-harvest management From the ripening of the grapes to the deciduous period, the accumulation of tree nutrients and the enhancement of disease resistance have an important impact on the ripening of the branches and the safe wintering. The plant growth, flowering, and results of the second year are also greatly promoted. . Therefore, after the grapes are harvested, the tree body must be strengthened and managed. Specific should do the following: Increase fertilizer material. A mixture of 0.2% urea and 0.2% potassium dihydrogen phosphate was sprayed once every 10 days and sprayed continuously for 2 to 3 times. In addition, we must also use basal fertilization in the autumn, use organic manure per acre, circulatory fertilizer, compost, etc. 2000 kg of organic fertilizer and 20 kg of superphosphate, mix and then open up the ditch and apply well. Inhibits shoots. In order to prevent over-growth of grapevines, manual measures such as topping, removal of shoots, etc., or spraying of 0.05% solution for a long time may be adopted in order to suppress its growth and reduce nutrient consumption. Disease prevention and treatment. Grape leaves are vulnerable to downy mildew, powdery mildew, white rot, and brown spot disease. Therefore, the grape fruit can be used after 200 times the half Bordeaux mixture, 50% Ketu wettable powder 500 times, 65% Zeixin wettable powder 500 times, 70% thiophanate-methyl wettable powder 1000 times Alternate spraying, spraying once every 10 days. Clean the orchard. After the grape leaves fall, it should be combined with the winter pruning to clear the garden. The diseased leaves and diseased branches should be completely removed and burned in order to reduce the source of the disease. China Agricultural Network Editor