(a) repeatedly topping The new shoots have a strong growth potential. If they do not pick up their hearts, they can grow indefinitely until autumn. This new shoot is not very fulfilling and extremely resistant to freezing. This measure not only prevents freezing injury, but also lays the foundation for the next year's high yield. Mainly for the new shoots of grapes to be picked up in time, repeatedly topping. To put it simply, when the new shoot grows to 7~8 leaves, it will take care of the shoots after the heart has been picked up and leave 5~6 leaves topping. Auxiliary tip occurs on the shoot, leaving 3 to 5 leaves repeatedly topping. The shoots cultivated after repeated toppings have large and thick leaves, full shoots, and well matured shoots. Not only are the results of the leap years strong, but they are also extremely frost-resistant. (B) reasonable load Some fruit growers have always believed that the higher the yield, the better. In actual fact, if the grape is overloaded, it will not only reduce the quality but will not be able to sell at a good price. It will also cause the grapes to be immature or mature, thin and empty and extremely cold-resistant. In general, it is appropriate to produce varietally from 1000 to 1500 ounces per 666.7 grains, and fresh vines from 2000 to 2500 tons per 666.7 tons. Soil fertility sufficient water and fertilizer can be discretionary high, and vice versa. (c) Scientific fertilization Experts have argued that the ratio of pure N, P, and K required by grapes is 1:1.5:1. This view is recognized by most fruit farmers. Some fruit growers place more emphasis on nitrogen fertilizer in fertilizers, which is a cause of poor ripening of new shoots and is prone to frost damage. In general, regardless of the small seedlings planted in the year or the result park, nitrogen is mainly used in the early stage of growth, nitrogen, phosphorus and potassium are applied in the middle stage, and phosphorus and potassium are the main components in the later stage. (d) Controlling pests Pests and diseases seriously affect the maturity and quality of new shoots, especially downy mildew. In recent years, the incidence of rapid damage is severe. Grapes that are harmed by this disease are vulnerable to freezing damage. Infested shoots, especially those that have been harmed by grapevines, or died in the same year, are also extremely cold-resistant when they die. For pests and diseases, prevention should be the main method for comprehensive prevention and control. According to the law of occurrence of pests and diseases, insecticides should be properly added when spraying bactericides. In the case of grape downy mildew, special attention should be paid. In summer and autumn, when the temperature is low and high, the average daily temperature is about ≥12°C, and the air humidity is about 90%. At this point can be sprayed 1:1:180 times Bordeaux mixture, or spray 80% of the 400 times the amount of aluminum phosphate aluminum, or spray 78% of Kebo 600 times. If the disease has already occurred, spray 78% Kebo 600 to 800 times fluid plus 80% diethylaluminophosphate 500 to 600 times fluid. (v) Pouring pre-winter water This is a key antifreeze water. Before the grape seedlings were overwintering, they were combined with ditching basal fertiliser and pouring water. Allow the soil to loosen and then till the soil. (6) Cold resistance exercise Grapes can only require temperatures above 10°C during growth. In the off-season period, its branch buds, Northeast Mountain Grape can tolerate -40°C, Eurasian species can withstand -18°C to -20°C, European and American hybrids can tolerate -20°C to -22°C, during which the grape plants themselves have a series of physiological changes. This change is for low temperature resistance and resistance to freezing. This series of changes occurred after the leaves entered the dormancy period. Therefore, after the grape enters the dormancy period, it is necessary to allow it to exercise naturally for a period of time. (seven) buried in the cold Cold areas need to be buried in cold climates. The best season is about ten days before the land is frozen. After the grape has a certain amount of cold, it is carried out. In the spring of the second year, when frost does not occur again in the weather, it is necessary to remove cold soil and make the soil too early. It is prone to frostbite when the cold current occurs. The grapes sprout in the soil and do not disturb the soil. In accordance with the above seven articles on the cold-proofing of grapes, the freezing injury will generally not occur. Http:// Algal Blue Protein,Phycocyanin Spirulina,Rin Blue Phycocyanin,Organic Phycocyanin Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyibiotech.com