How to improve the quality of Kyoho grape

First, scientific fertilization irrigation. Kyoho grape has higher requirements for fertilizer and water conditions, and has a stricter ratio of N, P, and K. Generally, for every 100 kilograms of berries increased, 1 kg of nitrogen, 0.3 kg of phosphorus, and 1 kg of potassium need to be added. Therefore, adding organic fertilizer and applying foliar fertilizer will improve the quality of fruit. In the growing season, it is necessary to control the amount of nitrogen fertilizer and increase the amount of phosphorus and potassium fertilizers. The initial stage of berry growth can be sprayed with 1 to 2 times of available nitrogen fertilizer; at the end of May, combined with irrigation, 0.2 kg of potassium sulfate per plant; before spraying, 0.3% of potassium dihydrogen phosphate is sprayed once per month in 1 and 2 weeks. It is necessary to ensure sufficient water supply from the sprouting of the grapes to the coloring of the berries, and irrigation should not be performed for 2 to 3 weeks before harvesting. Second, reasonable pruning. The use of stand and "D-shaped" frame cultivation, leaving 2 to 3 main vines per plant, winter cut to the main long-pruning, pruning as little as possible using short tips, 6 to 8 per square meter of surface reservation Results of the mother branch, and note staggered up and down. Pay attention to summer trimming, new shoots 8 to 10 cm apart, to ensure ventilation and light. The new shoots were picked in time, and the a shoots retained 1 to 2 leaves repeatedly topping. Third, thinning and thinning fruit. One of the major causes of the decline in the quality of Kyoho grapes is excessive production. Therefore, the output should be limited to 2000-2500 kg per mu. Through reasonable loading, thinning (ordering) thinning fruit (spike), adjusting the appearance of the tree to maintain the tree potential, to achieve high yield and stable quality. Generally extended branches and weak branches do not leave ear, mean tree branch leaves 1 ear, strong branches leave 1 to 2 ears, so that the ratio of effective leaves and ears is 15 to 20:1. Before flowering, remove 1/5 to 1/4 of the inflorescence tip and first spike. After the fruit enlargement, small particles, diseases, insects, and cracked fruits will be removed. Fourth, fruit bagging. Bagging can effectively reduce the incidence of grape pests and diseases, ensure that the fruit is not polluted by pesticides, birds, bees, etc., make the skin bright, bright color and improve quality. Sacking is usually performed after the fruit falls from the grapes. When the size of the mung bean is large, the whole tree is sprayed with 70% thiophanate-methyl 1000 times after the whole fruit is thinned. After the medicine is dried, it can be bagged, and then it can be covered with a thin wire or The string fastens the mouth of the bag to the new shoot or to the adjacent vine. Remove bags 2 weeks before fruit harvest. Use special grape bags or homemade paper bags. Fifth, timely harvest. Kyoho grapes generally grow in purplish to black-purple berries, and the fruit can be harvested when it basically shows the inherent quality and flavor of the variety. Precocious fruits with poor coloration, low sugar content, high acid content and poor quality. Picking should be sunny morning morning dew or afternoon. When picking, hold the handle with your hand and cut the ear with another hand to avoid touching the fruit and rub the fruit powder on the fruit surface.

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