How to improve the quality of Jufeng grape

After Jufeng grape was introduced into China in 1995, the quality of Jufeng grape has been declining since 2003, some poor ripening, some poor fruit expansion, poor coloring and so on. Some will wither directly and the fruit will rot and deteriorate, which seriously reduces the quality of Jufeng grape and has a great impact on the market competitiveness of Jufeng grape. Therefore, how to improve the quality of Jufeng grape is now the primary goal. Today, the editor has brought you a way to improve the quality of Jufeng grape.

1. Fertilizer and water management

The growth of Jufeng grape is very strong, and there is a great demand for fertilizer and water, so it is necessary to strengthen the fertilizer and water management of Jufeng grape. According to the experiment, for every 100 berries supplied by Jufeng grape, 1.5 kg of pure nitrogen, phosphorus and potassium is needed. And during the berry growth period, maintaining sufficient water can effectively expand the fruit and increase its yield, but the excess water should not be excessive, because excessive water will reduce the sugar content of the fruit, high acidity, unsuitable coloring, fruit cracking and other problems. And it will also induce many diseases, such as Botrytis cinerea, which do great harm to the aroma and taste of Jufeng grape and seriously affect the quality. So water properly and stop watering half a month before harvest. It is also necessary to control nitrogen fertilizer, should not be excessive, and apply potassium and phosphorus fertilizer to prevent overgrowth of plants and affect permeability.

2. Reasonable pruning

Most of the time, in order to increase yield, fruit growers do not thinning inflorescences or pinching flowers in summer, resulting in insufficient and scattered nutrient supply, and different fruit ripening times. And in winter, light cutting, leaving more branches, will cause the fruit site to move upward, overload and uneven distribution will lead to malnutrition, which has a great impact on the formation of high-quality fruit. Therefore, the Jufeng grape should pick the heart of the main shoot before flowering, remove the secondary shoot, let nutrients be transported to the part of the floral organ, or properly remove part of the inflorescence, pinch off the end 1/4 or so about four days before flowering, and let nutrients concentrate on the fruit.

3. Disease control

Disease is the main reason for harming the quality of Jufeng grape. After harvest in winter, the orchard should be thoroughly cleaned, ploughed and disinfected, and the diseased branches should be treated. Spray Baumedushi mixture before spring grape germination to control powdery mildew and felt disease, spray the same amount of Bordeaux solution after flowering to control black pox, and if grape wing moth damage is found on the fruit, you can pour some dichlorvos into the wormhole, then seal the wormhole with clay, and in order to prevent the fruit from being stained with pesticides, you should stop spraying pesticides 15 days before picking.

4. Timely picking

The growth time of Jufeng grape is about April to May. Under the correct cultivation techniques and management methods, it usually begins to color in July and ripens in late August. The grape turns purple in late August, and when the sugar content is more than 15%, the most suitable time for picking is when the flavor is stronger. And when harvesting, we should choose after the dew is dry in the morning, or in the afternoon, it is not suitable to harvest in cloudy or foggy days, so as to reduce the humidity and heat toxicity during harvest as much as possible. Prevent disease during storage.

The above is about the methods to improve the quality of Jufeng grape, we must pay attention to the part of fat, water and disease, because these two aspects have the greatest impact on Jufeng grape. Carelessness will lead to a substantial reduction or even extinction of grape production. It may have a great impact on the economic interests of farmers and may lose all their money. Therefore, we must have a correct management method to protect the growth of grapes. For more information, please continue to follow the pro-agricultural network!